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List of TCP and UDP port numbers

TCP and UDP are key protocols using specific port numbers to enable network applications, with each requiring only one port for bidirectional communication. The Transmission Control Protocol (TCP) often aligns its port numbers with those of the User Datagram Protocol (UDP) when both protocols support the same service. The Internet Assigned Numbers Authority (IANA) oversees the official allocation of these ports, although many ports are used unofficially, and some assigned protocols are obsolete. This summary highlights port numbers linked to widely adopted protocols, reflecting their importance in network communications.

Table legend

Legend of TCP and UDP table cells for port numbers
CellDescription
YesDescribed protocol is assigned by IANA for this port, and is: standardized, specified, or widely used for such.
UnofficialDescribed protocol is not assigned by IANA for this port, but is: standardized, specified, or widely used for such.
AssignedDescribed protocol is assigned by IANA for this port,2 but is not: standardized, specified, or widely used for such.
NoDescribed protocol is not assigned by IANA for this port, standardized, specified, or widely used for such.
ReservedPort is reserved by IANA,3 generally to prevent collision having its previous use removed.45 The port number may be available for assignment upon request to IANA.6

Well-known ports

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.

The port numbers in the range from 0 to 1023 (0 to 210 − 1) are the well-known ports or system ports.7 They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well-known ports.8

Well-known ports
PortTCPUDPSCTPDCCPDescription
0ReservedIn programming APIs (not in communication between hosts), requests a system-allocated (dynamic) port9
1YesAssignedTCP Port Service Multiplexer (TCPMUX). Historic. Both TCP and UDP have been assigned to TCPMUX by IANA,10 but by design only TCP is specified.11
2Assignedcompressnet (Management Utility)12
3Assignedcompressnet (Compression Process)13
5AssignedRemote Job Entry14 was historically using socket 5 in its old socket form, while MIB PIM has identified it as TCP/515 and IANA has assigned both TCP and UDP 5 to it.
7YesEcho Protocol1617
9YesYes18AssignedDiscard Protocol19
NoUnofficialWake-on-LAN20
11YesActive Users (systat service)2122
13YesDaytime Protocol23
15UnofficialNoPreviously netstat service2425
17YesQuote of the Day (QOTD)26
18YesMessage Send Protocol2728
19YesCharacter Generator Protocol (CHARGEN)29
20YesAssignedYes30File Transfer Protocol (FTP) data transfer31
21YesAssignedYes32File Transfer Protocol (FTP) control (command)33343536
22YesAssignedYes37Secure Shell (SSH),38 secure logins, file transfers (scp, sftp) and port forwarding
23YesAssignedTelnet protocol—unencrypted text communications3940
25YesAssignedSimple Mail Transfer Protocol (SMTP),4142 used for email routing between mail servers
27Assignednsw-fe (NSW User System FE)4344
28UnofficialPalo Alto Networks' Panorama High Availability (HA) sync encrypted port.45
29Assignedmsg-icp (MSG ICP)46
31Assignedmsg-auth (MSG Authentication)47
33Assigneddsp (Display Support Protocol)48
37YesTime Protocol49
38Assignedrap (Route Access Protocol)50
39Assignedrlp (Resource Location Protocol)51
41Assignedgraphics (Graphics)52
42AssignedYesHost Name Server Protocol53
43YesAssignedWHOIS protocol545556
44Assignedmpm-flags (MPM FLAGS Protocol)57
45Assignedmpm (Message Processing Module [recv])58
46Assignedmpm-snd (MPM [default send])59
47Reserved
48Assignedauditd (Digital Audit Daemon)60
49YesTACACS Login Host protocol.61 TACACS+, still in draft which is an improved but distinct version of TACACS, only uses TCP 49.62
50Assignedre-mail-ck (Remote Mail Checking Protocol)63
51ReservedHistorically used for Interface Message Processor logical address management,64 entry has been removed by IANA on 2013-05-25
52AssignedXerox Network Systems (XNS) Time Protocol. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP.65
53YesDomain Name System (DNS)6667
54AssignedXerox Network Systems (XNS) Clearinghouse (Name Server). Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP.68
55Assignedisi-gl (ISI Graphics Language)69
56AssignedXerox Network Systems (XNS) Authentication Protocol. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP.70
58AssignedXerox Network Systems (XNS) Mail. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP.71
61ReservedHistorically assigned to the NIFTP-Based Mail protocol,72 but was never documented in the related IEN.73 The port number entry was removed from IANA's registry on 2017-05-18.74
62Assignedacas (ACA Services)75
63Assignedwhoispp (whois++)76
64Assignedcovia (Communications Integrator (CI))77
65Assignedtacacs-ds (TACACS-Database Service)78
66Assignedsql-net (Oracle SQL*NET)79
67AssignedYesBootstrap Protocol (BOOTP) server;80 also used by Dynamic Host Configuration Protocol (DHCP)
68AssignedYesBootstrap Protocol (BOOTP) client;81 also used by Dynamic Host Configuration Protocol (DHCP)
69AssignedYesTrivial File Transfer Protocol (TFTP)82838485
70YesAssignedGopher protocol86
71–74YesNETRJS protocol878889
76Assigneddeos (Distributed External Object Store)90
78Assignedvettcp (vettcp)91
79YesAssignedFinger protocol929394
80YesYes95Hypertext Transfer Protocol (HTTP)9697 uses TCP in versions 1.x and 2. HTTP/3 uses QUIC,98 a transport protocol on top of UDP.
81UnofficialTorPark onion routing99
82Assignedxfer (XFER Utility)100
82UnofficialTorPark control101
83Assignedmit-ml-dev (MIT ML Device)102
84Assignedctf (Common Trace Facility)103
85Assignedmit-ml-dev (MIT ML Device)104
86Assignedmfcobol (Micro Focus Cobol)105
88YesKerberos106107108 authentication system
89Assignedsu-mit-tg (SU/MIT Telnet Gateway)109
90Assigneddnsix (DNSIX Security Attribute Token Map)110
90UnofficialPointCast (dotcom)111
91Assignedmit-dov (MIT Dover Spooler)112
92Assignednpp (Network Printing Protocol)113
93Assigneddcp (Device Control Protocol)114
94Assignedobjcall (Tivoli Object Dispatcher)115
95YesAssignedSUPDUP, terminal-independent remote login116
96Assigneddixie (DIXIE Protocol Specification)117
97Assignedswift-rvf (Swift Remote Virtual File Protocol)118
98Assignedtacnews (TAC News)119
99Assignedmetagram (Metagram Relay)120
101YesAssignedNIC host name121
102YesAssignedISO Transport Service Access Point (TSAP) Class 0 protocol;122123
104YesDigital Imaging and Communications in Medicine (DICOM; also port 11112)
105YesCCSO Nameserver124
106UnofficialNomacOS Server, (macOS) password server125
107YesRemote User Telnet Service (RTelnet)126
108YesIBM Systems Network Architecture (SNA) gateway access server
109YesAssignedPost Office Protocol, version 2 (POP2)127
110YesAssignedPost Office Protocol, version 3 (POP3)128129130
111YesOpen Network Computing Remote Procedure Call (ONC RPC, sometimes referred to as Sun RPC)
112YesMcIDAS Data Transmission Protocol
113YesNoIdent, authentication service/identification protocol,131132 used by IRC servers to identify users
YesAssignedAuthentication Service (auth), the predecessor to identification protocol. Used to determine a user's identity of a particular TCP connection.133
115YesAssignedSimple File Transfer Protocol134
117YesUUCP Mapping Project (path service)135
118YesStructured Query Language (SQL) Services[jargon]
119YesAssignedNetwork News Transfer Protocol (NNTP),136 retrieval of newsgroup messages137138
123AssignedYesNetwork Time Protocol (NTP), used for time synchronization139
126YesFormerly Unisys Unitary Login, renamed by Unisys to NXEdit. Used by Unisys Programmer's Workbench for Clearpath MCP, an IDE for Unisys MCP software development
135YesDCE endpoint resolution
YesMicrosoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service,140 used to remotely manage services including DHCP server, DNS server and WINS. Also used by DCOM
137YesNetBIOS Name Service, used for name registration and resolution141142
138AssignedYesNetBIOS Datagram Service143144145
139YesAssignedNetBIOS Session Service146147
143YesAssignedInternet Message Access Protocol (IMAP),148 management of electronic mail messages on a server149
151AssignedHEMS
152YesBackground File Transfer Program (BFTP)150[importance?]
153YesSimple Gateway Monitoring Protocol (SGMP), a protocol for remote inspection and alteration of gateway management information151
156YesStructured Query Language (SQL) Service[jargon]
158YesDistributed Mail System Protocol (DMSP, sometimes referred to as Pcmail)152[importance?]
161AssignedYesSimple Network Management Protocol (SNMP)153
162YesSimple Network Management Protocol Trap (SNMPTRAP)154
165AssignedXerox
169AssignedSEND
170YesNetwork PostScript print server
175YesVMNET service using NJE
177YesX Display Manager Control Protocol (XDMCP), used for remote logins to an X Display Manager server155[self-published source]
179YesAssignedYes156Border Gateway Protocol (BGP),157 used to exchange routing and reachability information among autonomous systems (AS) on the Internet
180Assignedris
194YesInternet Relay Chat (IRC)158
199YesSNMP Unix Multiplexer (SMUX)159
201YesAppleTalk Routing Maintenance
209YesAssignedQuick Mail Transfer Protocol160[self-published source]
210YesANSI Z39.50
213YesInternetwork Packet Exchange (IPX)
218YesMessage posting protocol (MPP)
220YesInternet Message Access Protocol (IMAP), version 3
225–241Reserved
249–255Reserved
259YesEfficient Short Remote Operations (ESRO)
262YesArcisdms
264YesBorder Gateway Multicast Protocol (BGMP)
280Yeshttp-mgmt
300UnofficialThinLinc Web Access, Spartan protocol 161
308YesNovastor Online Backup
311YesAssignedmacOS Server Admin162 (officially AppleShare IP Web administration163)
312UnofficialNomacOS Xsan administration164
318YesPKIX Time Stamp Protocol (TSP)
319YesPrecision Time Protocol (PTP) event messages
320YesPrecision Time Protocol (PTP) general messages
323YesResource Public Key Infrastructure165
350YesMapping of Airline Traffic over Internet Protocol (MATIP) type A
351YesMATIP type B
356Yescloanto-net-1 (used by Cloanto Amiga Explorer and VMs)
366YesOn-Demand Mail Relay (ODMR)
369YesRpc2portmap
370Yescodaauth2, Coda authentication server
Yessecurecast1, outgoing packets to NAI's SecureCast servers166As of 2000
371YesClearCase albd
376YesAmiga Envoy Network Inquiry Protocol
383YesHP data alarm manager
384YesA Remote Network Server System
387YesAURP (AppleTalk Update-based Routing Protocol)167
388YesAssignedUnidata LDM near real-time data distribution protocol168[self-published source]169[self-published source]
389YesAssignedLightweight Directory Access Protocol (LDAP)170
399YesDigital Equipment Corporation DECnet+ (Phase V) over TCP/IP (RFC1859)
401YesUninterruptible power supply (UPS)
427YesService Location Protocol (SLP)171
433YesNNTP, part of Network News Transfer Protocol
434YesMobile IP Agent (RFC 5944)
443YesYes172Hypertext Transfer Protocol Secure (HTTPS)173174 uses TCP in versions 1.x and 2. HTTP/3 uses QUIC,175 a transport protocol on top of UDP.
444YesSimple Network Paging Protocol (SNPP), RFC 1568
445YesMicrosoft-DS (Directory Services) Active Directory,176 Windows shares
YesAssignedMicrosoft-DS (Directory Services) SMB177 file sharing
464YesKpasswd:178 Kerberos Change/Set password
465179YesNoMessage Submission over TLS protocol180181
YesNoURL Rendezvous Directory for Cisco SSM182
475Yestcpnethaspsrv, Aladdin Knowledge Systems Hasp services
476–490UnofficialCentro Software ERP183 ports
491UnofficialGO-Global remote access and application publishing software
497YesRetrospect
500AssignedYesInternet Security Association and Key Management Protocol (ISAKMP) / Internet Key Exchange (IKE)184
502YesModbus Protocol
504YesCitadel, multiservice protocol for dedicated clients for the Citadel groupware system
510YesFirstClass Protocol (FCP), used by FirstClass client/server groupware system
512YesRexec, Remote Process Execution
Yescomsat, together with biff
513Yesrlogin
YesWho185
514UnofficialRemote Shell, used to execute non-interactive commands on a remote system (Remote Shell, rsh, remsh)
NoYesSyslog,186 used for system logging
515YesAssignedLine Printer Daemon (LPD),187 print service
517YesTalk
518YesNTalk
520Yesefs, extended file name server
YesRouting Information Protocol (RIP)
521YesRouting Information Protocol Next Generation (RIPng)
524YesNetWare Core Protocol (NCP) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc.
525YesTimed, Timeserver
530YesRemote procedure call (RPC)
532YesAssignednetnews188
533Yesnetwall, for emergency broadcasts
540YesUnix-to-Unix Copy Protocol (UUCP)
542Yescommerce (Commerce Applications)
543Yesklogin, Kerberos login
544Yeskshell, Kerberos Remote shell
546YesDHCPv6 client
547YesDHCPv6 server
548YesAssignedApple Filing Protocol (AFP) over TCP189
550Yesnew-rwho, new-who190
554YesReal Time Streaming Protocol (RTSP)191
556YesRemotefs, RFS, rfs_server
560Yesrmonitor, Remote Monitor
561Yesmonitor
563YesNNTP over TLS/SSL (NNTPS)
564Unofficial9P (Plan 9)
585NoPreviously assigned for use of Internet Message Access Protocol over TLS/SSL (IMAPS), now deregistered in favour of port 993.192
587YesAssignedEmail Message Submission (No longer preferred; see port 465.)193194195
591YesFileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80)
593YesHTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server
601YesReliable Syslog Service — used for system logging
604YesTUNNEL profile,196 a protocol for BEEP peers to form an application layer tunnel
623YesASF Remote Management and Control Protocol (ASF-RMCP) & IPMI Remote Management Protocol
625UnofficialNoOpen Directory Proxy (ODProxy)197
631YesInternet Printing Protocol (IPP)198
UnofficialCommon Unix Printing System (CUPS) administration console (extension to IPP)
635YesRLZ DBase
636YesAssignedLightweight Directory Access Protocol over TLS/SSL (LDAPS)199
639YesMulticast Source Discovery Protocol, MSDP
641YesSupportSoft Nexus Remote Command (control/listening), a proxy gateway connecting remote control traffic
643YesSANity
646YesLabel Distribution Protocol (LDP), a routing protocol used in MPLS networks
647YesDHCP Failover protocol200
648YesRegistry Registrar Protocol (RRP)201
651YesIEEE-MMS
653YesSupportSoft Nexus Remote Command (data), a proxy gateway connecting remote control traffic
654YesMedia Management System (MMS) Media Management Protocol (MMP)202
655YesTinc VPN daemon
657YesIBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM)203 and Hardware Management Console to connect managed logical partitions (LPAR) to enable dynamic partition reconfiguration
660YesAssignedmacOS Server administration,204 version 10.4 and earlier205
666YesDoom, the first online first-person shooter
Unofficialairserv-ng,206 aircrack-ng's server for remote-controlling wireless devices
674YesApplication Configuration Access Protocol (ACAP)
684YesCORBA IIOP SSL207
688YesREALM-RUSD (ApplianceWare Server Appliance Management Protocol)
690YesVelneo Application Transfer Protocol (VATP)
691YesMS Exchange Routing
694YesLinux-HA high-availability heartbeat
695YesAssignedIEEE Media Management System over SSL (IEEE-MMS-SSL)208
698YesOptimized Link State Routing (OLSR)
700YesExtensible Provisioning Protocol (EPP), a protocol for communication between domain name registries and registrars (RFC 5734)
701YesLink Management Protocol (LMP),209 a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links
702YesIRIS210211 (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol)212 (RFC 3983)
706YesSecure Internet Live Conferencing (SILC)
711YesCisco Tag Distribution Protocol213214215—being replaced by the MPLS Label Distribution Protocol216
712YesTopology Broadcast based on Reverse-Path Forwarding routing protocol (TBRPF; RFC 3684)
749YesKerberos administration217
750Yeskerberos-iv, Kerberos version IV
751Unofficialkerberos_master, Kerberos authentication
752Unofficialpasswd_server, Kerberos password (kpasswd) server
753YesReverse Routing Header (RRH)218
Unofficialuserreg_server, Kerberos userreg server
754Yestell send
Unofficialkrb5_prop, Kerberos v5 slave propagation
760Unofficialkrbupdate [kreg], Kerberos registration
777Unofficialmachine socket eXtension [msx] protocol
782UnofficialConserver serial-console management server
783UnofficialSpamAssassin spamd daemon
800Yesmdbs-daemon
802YesMODBUS/TCP Security219
808UnofficialMicrosoft Net.TCP Port Sharing Service
829YesAssignedCertificate Management Protocol220
830YesNETCONF over SSH
831YesNETCONF over BEEP
832YesNETCONF for SOAP over HTTPS
833YesNETCONF for SOAP over BEEP
843UnofficialAdobe Flash221
847YesDHCP Failover protocol
848YesGroup Domain Of Interpretation (GDOI) protocol
853YesDNS over TLS (RFC 7858)
YesDNS over QUIC or DNS over DTLS222
860YesiSCSI (RFC 3720)
861YesOWAMP control (RFC 4656)
862YesTWAMP control (RFC 5357)
873Yesrsync file synchronization protocol
888Unofficialcddbp, CD DataBase (CDDB) protocol (CDDBP)
UnofficialIBM Endpoint Manager Remote Control
897UnofficialBrocade SMI-S RPC
898UnofficialBrocade SMI-S RPC SSL
902UnofficialVMware ESXi223224
903UnofficialVMware ESXi225226
953YesReservedBIND remote name daemon control (RNDC)227228
981UnofficialRemote HTTPS management for firewall devices running embedded Check Point VPN-1 software229
987UnofficialSony PlayStation Wake On Lan
UnofficialMicrosoft Remote Web Workplace, a feature of Windows Small Business Server230
988UnofficialLustre (file system)231 Protocol (data).
989YesFTPS Protocol (data), FTP over TLS/SSL
990YesFTPS Protocol (control), FTP over TLS/SSL
991YesNetnews Administration System (NAS)232
992YesTelnet protocol over TLS/SSL
993YesAssignedInternet Message Access Protocol over TLS/SSL (IMAPS)233
994ReservedPreviously assigned to Internet Relay Chat over TLS/SSL (IRCS), but was not used in common practice.
995YesPost Office Protocol 3 over TLS/SSL (POP3S)234
1010UnofficialThinLinc web-based administration interface235
1011–1020Reserved
1023Reserved236
Unofficialz/OS Network File System (NFS) (potentially ports 991–1023)237238239

Registered ports

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.

The range of port numbers from 1024 to 49151 (210 to 215 + 214 − 1) are the registered ports. They are assigned by IANA for specific service upon application by a requesting entity.240 On most systems, registered ports can be used without superuser privileges.

Registered ports
PortTCPUDPSCTPDCCPDescription
1024ReservedReserved
1025Assignednetwork blackjack241
1027ReservedReserved
YesNative IPv6 behind IPv4-to-IPv4 NAT Customer Premises Equipment (6a44)242
1029UnofficialMicrosoft DCOM services
1058Yesnim, IBM AIX Network Installation Manager (NIM)
1059Yesnimreg, IBM AIX Network Installation Manager (NIM)
1080YesSOCKS proxy
1085YesWebObjects243
1098Yesrmiactivation, Java remote method invocation (RMI) activation
1099YesAssignedrmiregistry, Java remote method invocation (RMI) registry
1100UnofficialSaltoSystems - Handshake for IP-Components
1112UnofficialESET virus updates244
1113Assigned245246Yes247Licklider Transmission Protocol (LTP) delay tolerant networking protocol
1119YesBattle.net chat/game protocol, used by Blizzard's games248
1144Yesfuscript (Fusion Script) used by Blackmagic Design Fusion and DaVinci Resolve249
1167YesYesYesCisco IP SLA (Service Assurance Agent)
1194YesOpenVPN
1198YesThe cajo project Free dynamic transparent distributed computing in Java
1212UnofficialEqualsocial Fediverse protocol
1214YesKazaa
1220YesAssignedQuickTime Streaming Server administration250
1234YesInfoseek search agent
UnofficialVLC media player default port for UDP/RTP stream
1241UnofficialNessus Security Scanner
1270YesMicrosoft System Center Operations Manager (SCOM) (formerly Microsoft Operations Manager (MOM)) agent
1293YesInternet Protocol Security (IPSec)
1311YesWindows RxMon.exe
UnofficialDell OpenManage HTTPS251
1314UnofficialFestival Speech Synthesis System server252
1319YesAMX ICSP (Protocol for communications with AMX control systems devices)
1337YesMen&Mice DNS253
UnofficialStrapi254
UnofficialRazer Chroma SDK Server255
UnofficialSails.js default port256
1341YesQubes (Manufacturing Execution System)
1344YesInternet Content Adaptation Protocol
1352YesHCL Notes / Domino (RPC) protocol
1360YesMimer SQL
1414YesIBM WebSphere MQ (formerly known as MQSeries)
1417YesTimbuktu Service 1 Port
1418YesTimbuktu Service 2 Port
1419YesTimbuktu Service 3 Port
1420YesTimbuktu Service 4 Port
1431YesReverse Gossip Transport Protocol (RGTP), used to access a General-purpose Reverse-Ordered Gossip Gathering System (GROGGS) bulletin board, such as that implemented on the Cambridge University's Phoenix system
1433YesMicrosoft SQL Server database management system (MSSQL) server
1434YesMicrosoft SQL Server database management system (MSSQL) monitor
1476YesWiFi Pineapple Hak5.
1481YesAIRS data interchange.
1492UnofficialSid Meier's CivNet, a multiplayer remake of the original Sid Meier's Civilization game
1494UnofficialCitrix Independent Computing Architecture (ICA)257
1500UnofficialIBM Tivoli Storage Manager server258
1501UnofficialIBM Tivoli Storage Manager client scheduler259
1503UnofficialWindows Live Messenger (Whiteboard and Application Sharing)260
1512YesMicrosoft's Windows Internet Name Service (WINS)
1513UnofficialGarena game client
1521YesnCUBE License Manager
UnofficialOracle database default listener, in future releases[when?]261 official port 2483 (TCP/IP) and 2484 (TCP/IP with SSL)
1524Yesingreslock, ingres
1527YesOracle Net Services, formerly known as SQL*Net262
UnofficialApache Derby Network Server263
1533YesIBM Sametime Virtual Places Chat
1534NoUnofficialEclipse Target Communication Framework264
1540Unofficial1C:Enterprise server agent (ragent)265266
1541Unofficial1C:Enterprise master cluster manager (rmngr)267
1542Unofficial1C:Enterprise configuration repository server268
1545Unofficial1C:Enterprise cluster administration server (RAS)269
1547YesLaplink
1550Unofficial1C:Enterprise debug server270
UnofficialGadu-Gadu (direct client-to-client)
1560–1590Unofficial1C:Enterprise cluster working processes271
1581YesMIL STD 2045-47001 VMF
UnofficialIBM Tivoli Storage Manager web client272
1582–1583UnofficialIBM Tivoli Storage Manager server web interface273
1583UnofficialPervasive PSQL274
1589YesCisco VLAN Query Protocol (VQP)
1604UnofficialDarkComet remote administration tool (RAT)
1626UnofficialiSketch275
1627UnofficialiSketch276
1628YesLonTalk normal
1629YesLonTalk urgent
1645NoUnofficialEarly deployment of RADIUS before RFC standardization was done using UDP port number 1645. Enabled for compatibility reasons by default on Cisco and Juniper Networks RADIUS servers.277 Official port is 1812. TCP port 1645 must not be used for RADIUS.278
1646NoUnofficialOld radacct port,[when?] RADIUS accounting protocol. Enabled for compatibility reasons by default on Cisco and Juniper Networks RADIUS servers.279 Official port is 1813. TCP port 1646 must not be used for RADIUS.280
1666UnofficialPerforce281
1677YesNovell GroupWise clients in client/server access mode
1688UnofficialMicrosoft Key Management Service (KMS) for Windows Activation282
1701YesLayer 2 Forwarding Protocol (L2F)
AssignedYesLayer 2 Tunneling Protocol (L2TP)283
1707YesWindward Studios games (vdmplay)
UnofficialL2TP/IPsec, for establishing an initial connection284
1714–1764UnofficialKDE Connect285
1716UnofficialAmerica's Army, a massively multiplayer online game (MMO)286
1719YesH.323 registration and alternate communication
1720YesH.323 call signaling
1723YesAssignedPoint-to-Point Tunneling Protocol (PPTP)287
1755YesMicrosoft Media Services (MMS, ms-streaming)
1761UnofficialNovell ZENworks288289
1776YesEmergency management information system
1801YesMicrosoft Message Queuing
1812YesRADIUS authentication protocol, radius
1813YesRADIUS accounting protocol, radius-acct
1863YesMicrosoft Notification Protocol (MSNP), used by the Microsoft Messenger service and a number of instant messaging Messenger clients
1880UnofficialNode-RED290
1883YesMQTT (formerly MQ Telemetry Transport)
1900AssignedYesSimple Service Discovery Protocol (SSDP),291 discovery of UPnP devices
1935YesMacromedia Flash Communications Server MX, the precursor to Adobe Flash Media Server before Macromedia's acquisition by Adobe on December 3, 2005
UnofficialReal Time Messaging Protocol (RTMP), primarily used in Adobe Flash292
1965UnofficialNoGemini, a lightweight, collaboratively designed protocol, striving to fill the gap between Gopher and HTTP293
1967UnofficialCisco IOS IP Service Level Agreements (IP SLAs) Control Protocol
1972YesInterSystems Caché, and InterSystems IRIS versions 2020.3 and later
1984YesBig Brother
UnofficialArweave mining node294
1985AssignedYesCisco Hot Standby Router Protocol (HSRP)295[self-published source]
1998YesCisco X.25 over TCP (XOT) service
2000YesCisco Skinny Client Control Protocol (SCCP)
2001–2009Unofficialhexss http server (python package)
2010UnofficialArtemis: Spaceship Bridge Simulator296
2033UnofficialCivilization IV multiplayer297
2049YesYesYesNetwork File System (NFS)298
2056UnofficialCivilization IV multiplayer299
2080YesAutodesk NLM (FLEXlm)
2082UnofficialcPanel default300
2083YesSecure RADIUS Service (radsec)
UnofficialcPanel default TLS301
2086YesGNUnet
UnofficialWebHost Manager default302
2087UnofficialWebHost Manager default TLS303
2095YescPanel default web mail304
2096UnofficialcPanel default TLS web mail305
2100UnofficialWarzone 2100 multiplayer
2101UnofficialNetworked Transport of RTCM via Internet Protocol (NTRIP)
2102YesZephyr Notification Service server
2103YesZephyr Notification Service serv-hm connection
2104YesZephyr Notification Service hostmanager
2123YesGTP control messages (GTP-C)
2137Unofficial
2142YesTDMoIP (TDM over IP)
2152YesGTP user data messages (GTP-U)
2159YesGDB remote debug port
2181YesEForward-document transport system
UnofficialApache ZooKeeper default client port
2195UnofficialApple Push Notification Service, binary, gateway.306307 Deprecated March 2021.308
2196UnofficialApple Push Notification Service, binary, feedback.309310 Deprecated March 2021.311
2197UnofficialApple Push Notification Service, HTTP/2, JSON-based API.
2210YesNOAAPORT Broadcast Network
2211YesEMWIN
2221UnofficialESET anti-virus updates312
2222YesEtherNet/IP implicit messaging for IO data
UnofficialDirectAdmin Access313
2222–2226YesESET Remote administrator314
2240YesGeneral Dynamics Remote Encryptor Configuration Information Protocol (RECIPe)
2261YesCoMotion master
2262YesCoMotion backup
2302UnofficialArmA multiplayer315
UnofficialHalo: Combat Evolved multiplayer host316
2303UnofficialArmA multiplayer (default port for game +1)317318
UnofficialHalo: Combat Evolved multiplayer listener319
2305UnofficialArmA multiplayer (default port for game +3)320
2351UnofficialAIM game LAN network port
2368UnofficialGhost (blogging platform)321
2369UnofficialDefault for BMC Control-M/Server Configuration Agent
2370UnofficialDefault for BMC Control-M/Server, to allow the Control-M/Enterprise Manager to connect to the Control-M/Server
2372UnofficialDefault for K9 Web Protection/parental controls, content filtering agent
2375YesReservedDocker REST API (plain)
2376YesReservedDocker REST API (SSL)
2377YesReservedDocker Swarm cluster management communications322[self-published source]
2379YesReservedCoreOS etcd client communication
UnofficialKGS Go Server323
2380YesReservedCoreOS etcd server communication
2389AssignedOpenView Session Mgr
2399YesFileMaker Data Access Layer (ODBC/JDBC)
2401YesCVS version control system password-based server
2404YesIEC 60870-5-104, used to send electric power telecontrol messages between two systems via directly connected data circuits
2424UnofficialOrientDB database listening for binary client connections324
2426UnofficialVMware VeloCloud Multipath Protocol (VCMP) Dynamic Multipath Optimization (DMPO)
2427YesMedia Gateway Control Protocol (MGCP) media gateway
2447Yesovwdb—OpenView Network Node Manager (NNM) daemon
2456UnofficialValheim
2459YesXRPL
2480UnofficialOrientDB database listening for HTTP client connections325
2483YesOracle database listening for insecure client connections, replaces port 1521[when?]
2484YesOracle database listening for SSL client connections
2500UnofficialNetFS communication326
2501UnofficialNetFS probe
2535YesMulticast Address Dynamic Client Allocation Protocol (MADCAP).327 All standard messages are UDP datagrams.328
2541YesLonTalk/IP
2546–2548YesEVault data protection services
2593UnofficialUltima Online servers
2598UnofficialCitrix Independent Computing Architecture (ICA) with Session Reliability; port 1494 without session reliability329
2599UnofficialUltima Online servers
2628YesDICT330
2638YesSQL Anywhere database server331332
2710UnofficialXBT Tracker.333 UDP tracker extension is considered experimental.334
2727YesMedia Gateway Control Protocol (MGCP) media gateway controller (call agent)
2759UnofficialSuperTuxKart server 335
2761YesDICOM over Integrated Secure Communication Layer (ISCL) 336
2762YesDICOM over TLS337
2775YesShort Message Peer-to-Peer (SMPP)
2809Yescorbaloc:iiop URL, per the CORBA 3.0.3 specification
2811Yesgsi ftp, per the GridFTP specification
2827UnofficialI2P BOB Bridge338
2944YesMegaco text H.248
2945YesMegaco binary (ASN.1) H.248
2947Yesgpsd, GPS daemon
2948–2949YesWAP push Multimedia Messaging Service (MMS)
2967YesSymantec System Center agent (SSC-AGENT)
2989YesZarkov Intelligent Agent Communication339
3000UnofficialRuby on Rails development default340
UnofficialMeteor development default341
UnofficialResilio Sync,342 spun from BitTorrent Sync.
UnofficialCreate React App, script to create single-page React applications343
UnofficialGogs and Gitea (self-hosted Git service)344
UnofficialGrafana345
3001YesNoHoneywell Prowatch346
3004UnofficialiSync347
3010YesKWS Connector
3020YesCommon Internet File System (CIFS). See also port 445 for Server Message Block (SMB), a dialect of CIFS.
3050Yesgds-db (Interbase/Firebird databases)
3052YesAPC PowerChute Network
3074YesXbox LIVE and Games for Windows – Live
3101UnofficialBlackBerry Enterprise Server communication protocol348
3128UnofficialNoSquid caching web proxy349
3225YesFibre Channel over IP (FCIP)
3233YesWhiskerControl research control protocol
3260YesiSCSI
3268Yesmsft-gc, Microsoft Global Catalog (LDAP service which contains data from Active Directory forests)
3269Yesmsft-gc-ssl, Microsoft Global Catalog over SSL (similar to port 3268, LDAP over SSL)
3283YesNet Assistant,350 a predecessor to Apple Remote Desktop
UnofficialApple Remote Desktop 2.0 or later351
3290UnofficialVirtual Air Traffic Simulation (VATSIM) network voice communication
3305YesOdette File Transfer Protocol (OFTP)
3306YesAssignedMySQL database system352
3323UnofficialDECE GEODI Server
3332UnofficialThundercloud DataPath Overlay Control
3333UnofficialEggdrop, an IRC bot default port353
UnofficialNetwork Caller ID server
UnofficialCruiseControl.rb354
UnofficialOpenOCD (gdbserver)355
3344UnofficialRepetier-Server
3351UnofficialPervasive PSQL356
3386YesGTP' 3GPP GSM/UMTS CDR logging protocol
3389YesMicrosoft Terminal Server (RDP) officially registered as Windows Based Terminal (WBT)357
3396YesNovell NDPS Printer Agent
3412YesxmlBlaster
3423YesXware xTrm Communication Protocol
3424YesXware xTrm Communication Protocol over SSL
3435YesPacom Security User Port
3455YesResource Reservation Protocol (RSVP)
3478YesSTUN, a protocol for NAT traversal358
YesTURN, a protocol for NAT traversal359 (extension to STUN)
YesSTUN Behavior Discovery.360 See also port 5349.
3478–3481UnofficialMicrosoft Teams361
3479UnofficialPlayStation Network362
3480UnofficialPlayStation Network363
3483YesSlim Devices discovery protocol
YesSlim Devices SlimProto protocol
3493YesNetwork UPS Tools (NUT)
3503YesMPLS LSP-echo Port
3516YesSmartcard Port
3527YesMicrosoft Message Queuing
3535UnofficialSMTP alternate364
3544YesTeredo tunneling
3551YesApcupsd Information Port 365
3601YesSAP Message Server Port366
3632YesAssignedDistcc, distributed compiler367
3645YesCyc
3655YesAdvanced Systems Concepts, Inc. ActiveBatch Exec Agent368
3659YesApple SASL, used by macOS Server Password Server369
UnofficialBattlefield 4
3667YesInformation Exchange
3671YesKNXnet/IP(EIBnet/IP)
3689YesAssignedDigital Audio Access Protocol (DAAP), used by Apple's iTunes and AirPlay370
3690YesSubversion (SVN)371 version control system
3702YesWeb Services Dynamic Discovery (WS-Discovery), used by various components of Windows Vista and later
3721UnofficialES File Explorer FTP server
3724YesSome Blizzard games372
UnofficialClub Penguin Disney online game for kids
3725YesNetia NA-ER Port
3749YesCimTrak373 registered port
3768YesRBLcheckd server daemon
3784YesBidirectional Forwarding Detection (BFD)for IPv4 and IPv6 (Single Hop) (RFC 5881)
3785UnofficialVoIP program used by Ventrilo
3799YesRADIUS change of authorization
3804YesHarman Professional HiQnet protocol
3825UnofficialRedSeal Networks client/server connection
3826YesWarMUX game server
UnofficialRedSeal Networks client/server connection
3835UnofficialRedSeal Networks client/server connection
3830YesSystem Management Agent, developed and used by Cerner to monitor and manage solutions
3856UnofficialERP Server Application used by F10 Software
3880YesIGRS
3868YesYesDiameter base protocol (RFC 3588)
3872YesOracle Enterprise Manager Remote Agent
3900Yesudt_os, IBM UniData UDT OS374
3960UnofficialWarframe online interaction
3962UnofficialWarframe online interaction
3978UnofficialOpenTTD game (masterserver and content service)
3978UnofficialPalo Alto Networks' Panorama management of firewalls and log collectors & pre-PAN-OS 8.0 Panorama-to-managed devices software updates.375
3979UnofficialOpenTTD game
3999YesNorman distributed scanning service
4000UnofficialDiablo II game
4001UnofficialMicrosoft Ants game
UnofficialCoreOS etcd client communication
UnofficialInterPlanetary File System swarm node376
4018YesProtocol information and warnings
4035UnofficialIBM Rational Developer for System z Remote System Explorer Daemon
4045UnofficialSolaris lockd NFS lock daemon/manager
4050UnofficialMud Master Chat protocol (MMCP) – Peer-to-peer communications between MUD clients.377
4061YesIce Location Service378
4069YesMinger Email Address Verification Protocol379
4070UnofficialAmazon Echo Dot (Amazon Alexa) streaming connection with Spotify380
4089YesOpenCORE Remote Control Service
4090YesKerio
4093YesPxPlus Client server interface ProvideX
4096YesAscom Timeplex Bridge Relay Element (BRE)
4105YesShofar (ShofarNexus)
4111YesAssignedXgrid381
4116YesSmartcard-TLS
4123AssignedYesZ-Wave Protocol382
4125UnofficialMicrosoft Remote Web Workplace administration
4172YesTeradici PCoIP
4190YesManageSieve383
4195YesAWS protocol for cloud remoting solution
4197YesHarman International's HControl protocol for control and monitoring of Audio, Video, Lighting and Control equipment
4198UnofficialCouch Potato Android app384
4200UnofficialAngular app
4201UnofficialTinyMUD and various derivatives
4222UnofficialNATS server default port385
4226UnofficialAleph One, a computer game
4242UnofficialOrthancDICOM server386
UnofficialQuassel distributed IRC client
4243UnofficialDocker implementations, redistributions, and setups default387[needs update?]
UnofficialCrashPlan
4244UnofficialViber388
4303YesSimple Railroad Command Protocol (SRCP)
4307YesTrueConf Client – TrueConf Server media data exchange389
4321YesReferral Whois (RWhois) Protocol390
4433UnofficialSaltoSystems - DTLS Based Communication for NCoder
4444UnofficialOracle WebCenter Content: Content Server—Intradoc Socket port. (formerly known as Oracle Universal Content Management).
UnofficialMetasploit's default listener port391
UnofficialXvfb X server virtual frame buffer service
UnofficialOpenOCD (Telnet)392
4444–4445UnofficialI2P HTTP/S proxy
4455UnofficialOBS Studio built-in WebSocket plugin default port
4460YesAssignedNetwork Time Security Key Establishment (NTS)393394
4486YesIntegrated Client Message Service (ICMS)
4488YesAssignedApple Wide Area Connectivity Service, used by Back to My Mac395
4500AssignedYesIPSec NAT Traversal396 (RFC 3947, RFC 4306)
4502–4534YesMicrosoft Silverlight connectable ports under non-elevated trust
4505–4506UnofficialSalt master
4534UnofficialArmagetron Advanced server default
4560Unofficialdefault Log4j socketappender port
4567UnofficialSinatra default server port in development mode (HTTP)
4569YesInter-Asterisk eXchange (IAX2)
4604YesIdentity Registration Protocol
4605YesDirect End to End Secure Chat Protocol
4610–4640UnofficialQualiSystems TestShell Suite Services
4662YesOrbitNet Message Service
UnofficialDefault for older versions of eMule397
4664UnofficialGoogle Desktop Search
4672UnofficialDefault for older versions of eMule398
4711UnofficialeMule optional web interface399
4713UnofficialPulseAudio sound server
4723UnofficialAppium open source automation tool
4724UnofficialDefault bootstrap port to use on device to talk to Appium
4728YesComputer Associates Desktop and Server Management (DMP)/Port Multiplexer400
4730YesGearman's job server
4739YesIP Flow Information Export
4747UnofficialApprentice
4753YesSIMON (service and discovery)
4789YesVirtual eXtensible Local Area Network (VXLAN)
4791YesIP Routable RocE (RoCEv2)
4840YesOPC UA Connection Protocol (TCP) and OPC UA Multicast Datagram Protocol (UDP) for OPC Unified Architecture from OPC Foundation
4843YesOPC UA TCP Protocol over TLS/SSL for OPC Unified Architecture from OPC Foundation
4847YesWeb Fresh Communication, Quadrion Software & Odorless Entertainment
4848UnofficialJava GlassFish Application Server administration default
4894YesLysKOM Protocol A401
4900UnofficialHFSQL (Hyperfile SQL) Mantra Server from PC SOFT402
4944NoUnofficialDrayTek DSL Status Monitoring403
4949YesMunin Resource Monitoring Tool
4950YesCylon Controls UC32 Communications Port
5000UnofficialUPnP—Windows network device interoperability
UnofficialVTun, VPN Software
UnofficialASP.NET Core — Development Webserver
UnofficialFlightGear multiplayer404
UnofficialSynology Inc. Management Console, File Station, Audio Station
UnofficialFlask Development Webserver
UnofficialHeroku console access
UnofficialDocker Registry405
UnofficialAT&T U-verse public, educational, and government access (PEG) streaming over HTTP406
UnofficialHigh-Speed SECS Message Services
Unofficial3CX Phone System Management Console/Web Client (HTTP)
UnofficialRidgeRun GStreamer Daemon (GSTD) 407
UnofficialApple's AirPlay Receiver408
UnofficialAWS Elastic Beanstalk Proxy server409
5000–5500NoUnofficialLeague of Legends, a multiplayer online battle arena video game410
5001UnofficialSlingbox and Slingplayer
UnofficialIperf (Tool for measuring TCP and UDP bandwidth performance)
UnofficialSynology Inc. Secured Management Console, File Station, Audio Station
Unofficial3CX Phone System Management Console/Web Client (HTTPS)
UnofficialInterPlanetary File System RPC API411
5002UnofficialASSA ARX access control system412
5003YesAssignedFileMaker – name binding and transport413
5004YesYesReal-time Transport Protocol media data (RTP) (RFC 3551, RFC 4571)
5005YesYesReal-time Transport Protocol control protocol (RTCP) (RFC 3551, RFC 4571)
5007UnofficialPalo Alto Networks – User-ID agent
5010YesRegistered to: TelePath (the IBM FlowMark workflow-management system messaging platform)414The TCP port is now used for: IBM WebSphere MQ Workflow
5011YesTelePath (the IBM FlowMark workflow-management system messaging platform)415
5022UnofficialMSSQL Server Replication and Database mirroring endpoints416
5025Yesscpi-raw Standard Commands for Programmable Instruments
5029UnofficialSonic Robo Blast 2 and Sonic Robo Blast 2 Kart servers
5031UnofficialAVM CAPI-over-TCP (ISDN over Ethernet tunneling)
5037UnofficialAndroid ADB server
5044YesStandard port in Filebeats/Logstash implementation of Lumberjack protocol.
5048YesTexai Message Service
5050UnofficialYahoo! Messenger
5051Yesita-agent Symantec Intruder Alert417
5060YesSession Initiation Protocol (SIP)418
5061Yes419Session Initiation Protocol (SIP) over TLS
5062YesLocalisation access
5064YesEPICS Channel Access server420
5065AssignedYesEPICS Channel Access repeater beacon421
5070UnofficialNoBinary Floor Control Protocol (BFCP)422
5075YesNoEPICS PV Access Data423424
5076NoYesEPICS PV Access Searches425426
5080UnofficialNEC Phone System SV8100 and SV9100 MLC phones: default iSIP port
5084YesEPCglobal Low Level Reader Protocol (LLRP)
5085YesEPCglobal Low Level Reader Protocol (LLRP) over TLS
5090Unofficial3CX Phone System 3CX Tunnel Protocol, 3CX App API, 3CX Session Border Controller
5093YesSafeNet, Inc Sentinel LM, Sentinel RMS, License Manager, client-to-server
5099YesSafeNet, Inc Sentinel LM, Sentinel RMS, License Manager, server-to-server
5104UnofficialIBM Tivoli Framework NetCOOL/Impact427 HTTP Service
5121UnofficialNeverwinter Nights
5150YesATMP Ascend Tunnel Management Protocol428
5151YesESRI SDE Instance
YesESRI SDE Remote Start
5154YesBZFlag
5172YesPC over IP Endpoint Management429
5173UnofficialVite430
5190YesAOL Instant Messenger protocol.431 The chat app is defunct as of 15 December 2017.432
5198UnofficialEchoLink VoIP Amateur Radio Software (Voice)
5199UnofficialEchoLink VoIP Amateur Radio Software (Voice)
5200UnofficialEchoLink VoIP Amateur Radio Software (Information)
5201UnofficialIperf3 (Tool for measuring TCP and UDP bandwidth performance)
5222YesReservedExtensible Messaging and Presence Protocol (XMPP) client connection433434435
5223UnofficialApple Push Notification Service436437
UnofficialExtensible Messaging and Presence Protocol (XMPP) client connection over SSL
5228YesHP Virtual Room Service
UnofficialGoogle Play, Android Cloud to Device Messaging Service, Google Cloud Messaging
5231YesRemote Control of Scan Software for Cruse Scanners438
5232YesCruse Scanning System Service439
UnofficialSilicon Graphics Distributed Graphics Library daemon (dgld)440441442
5235–5236UnofficialFirebase Cloud Messaging443
5242UnofficialViber444
5243UnofficialViber445
5246YesControl And Provisioning of Wireless Access Points (CAPWAP) CAPWAP control446
5247YesControl And Provisioning of Wireless Access Points (CAPWAP) CAPWAP data447
5269YesExtensible Messaging and Presence Protocol (XMPP) server-to-server connection448449450
5280YesExtensible Messaging and Presence Protocol (XMPP)451
5281UnofficialExtensible Messaging and Presence Protocol (XMPP)452
5298YesExtensible Messaging and Presence Protocol (XMPP)453
5310AssignedYesOutlaws, a 1997 first-person shooter video game454
5318YesReservedCertificate Management over CMS455
5349YesSTUN over TLS/DTLS, a protocol for NAT traversal456
YesTURN over TLS/DTLS, a protocol for NAT traversal457
YesReservedSTUN Behavior Discovery over TLS.458 See also port 3478.
5351ReservedYesNAT Port Mapping Protocol and Port Control Protocol—client-requested configuration for connections through network address translators and firewalls
5353AssignedYesMulticast DNS (mDNS)459
5355YesLink-Local Multicast Name Resolution (LLMNR), allows hosts to perform name resolution for hosts on the same local link (only provided by Windows Vista and Server 2008)
5357UnofficialWeb Services for Devices (WSDAPI) (starting from Windows Vista, Windows 7 and Server 2008)
5358UnofficialWSDAPI Applications to Use a Secure Channel (only provided by Windows Vista, Windows 7 and Server 2008)
5394UnofficialKega Fusion, a Sega multi-console emulator460461
5402YesMulticast File Transfer Protocol (MFTP)462[importance?]
5405YesNetSupport Manager
5412YesIBM Rational Synergy (Telelogic Synergy) (Continuus CM) Message Router
5413YesWonderware SuiteLink service
5417YesSNS Agent
5421YesNetSupport Manager
5432YesAssignedPostgreSQL463 database system
5433UnofficialBouwsoft file/webserver464
5445UnofficialCisco Unified Video Advantage
5450UnofficialOSIsoft PI Server Client Access 465
5457UnofficialOSIsoft PI Asset Framework Client Access 466
5458UnofficialOSIsoft PI Notifications Client Access 467
5480UnofficialVMware VAMI (Virtual Appliance Management Infrastructure)—used for initial setup of various administration settings on Virtual Appliances designed using the VAMI architecture.
5481UnofficialSchneider Electric's ClearSCADA (SCADA implementation for Windows) — used for client-to-server communication.468
5495UnofficialIBM Cognos TM1 Admin server
5498UnofficialHotline tracker server connection
5499UnofficialHotline tracker server discovery
5500UnofficialHotline control connection
UnofficialVNC Remote Frame Buffer RFB protocol—for incoming listening viewer
5501UnofficialHotline file transfer connection
5517UnofficialSetiqueue Proxy server client for SETI@Home project
5550UnofficialHewlett-Packard Data Protector
5554UnofficialFastboot default wireless port
5555UnofficialOracle WebCenter Content: Inbound Refinery—Intradoc Socket port. (formerly known as Oracle Universal Content Management). Port though often changed during installation
UnofficialFreeciv versions up to 2.0, Hewlett-Packard Data Protector, McAfee EndPoint Encryption Database Server, SAP, Default for Microsoft Dynamics CRM 4.0, Softether VPN default port
UnofficialWireless adb (Android Debug Bridge) control of an Android device over the network.
5556YesFreeciv, Oracle WebLogic Server Node Manager469
5568YesSession Data Transport (SDT), a part of Architecture for Control Networks (ACN)470
5601UnofficialKibana471
5631YespcANYWHEREdata, Symantec pcAnywhere (version 7.52 and later472)473 data
5632YespcANYWHEREstat, Symantec pcAnywhere (version 7.52 and later) status
5656UnofficialIBM Lotus Sametime p2p file transfer
5666UnofficialNRPE (Nagios)
5667UnofficialNSCA (Nagios)
5670YesFILEMQ ZeroMQ File Message Queuing Protocol
YesZRE-DISC ZeroMQ Realtime Exchange Protocol (Discovery)
5671YesAssignedAdvanced Message Queuing Protocol (AMQP)474 over TLS
5672YesAssignedYesAdvanced Message Queuing Protocol (AMQP)475
5678UnofficialNon8n476
NoYesMikroTik Neighbor Discovery Protocol477478
5683YesConstrained Application Protocol (CoAP)
5684YesConstrained Application Protocol Secure (CoAPs)
5693UnofficialNagios Cross Platform Agent (NCPA)479
5701UnofficialHazelcast default communication port480
5718UnofficialMicrosoft DPM Data Channel (with the agent coordinator)
5719UnofficialMicrosoft DPM Data Channel (with the protection agent)
5722YesMicrosoft RPC, DFSR (SYSVOL) Replication Service
5723UnofficialSystem Center Operations Manager481
5724UnofficialOperations Manager Console
5741YesIDA Discover Port 1
5742YesIDA Discover Port 2
5800UnofficialVNC Remote Frame Buffer RFB protocol over HTTP
UnofficialProjectWise Server482
5900YesRemote Frame Buffer protocol (RFB)
UnofficialVirtual Network Computing (VNC) Remote Frame Buffer RFB protocol483484
5905UnofficialWindows service "C:\Program Files\Intel\Intel(R) Online Connect Access\IntelTechnologyAccessService.exe" that listens on 127.0.0.1
5931YesAMMYY admin Remote Control
5938UnofficialTeamViewer remote desktop protocol485
5984YesCouchDB database server
5985YesWindows PowerShell Default psSession Port486 Windows Remote Management Service (WinRM-HTTP)487
5986YesWindows PowerShell Default psSession Port488 Windows Remote Management Service (WinRM-HTTPS)489
5988–5989YesCIM-XML (DMTF Protocol)490
6000–6063YesX11—used between an X client and server over the network
6005UnofficialDefault for BMC Software Control-M/Server—Socket used for communication between Control-M processes—though often changed during installation
UnofficialDefault for Camfrog chat & cam client
6009UnofficialJD Edwards EnterpriseOne ERP system JDENet messaging client listener
6024-6025UnofficialTigermeeting Android client discovery491
6026UnofficialTigermeeting client/server communication492
6030-6031UnofficialTigermeeting Admin user discovery493
6032UnofficialTigermeeting API for cloud management - TigerDriver 494
6050UnofficialArcserve backup
6051UnofficialArcserve backup
6081YesGeneric Network Virtualization Encapsulation (Geneve)495
6086YesPeer Distributed Transfer Protocol (PDTP), FTP like file server in a P2P network
6100UnofficialVizrt System
UnofficialVentrilo authentication for version 3
6101UnofficialBackup Exec Agent Browser
6110Yessoftcm, HP Softbench CM
6111Yesspc, HP Softbench Sub-Process Control
6112Yesdtspcd, execute commands and launch applications remotely
UnofficialBlizzard's Battle.net gaming service and some games,496 ArenaNet gaming service, Relic gaming service
UnofficialClub Penguin Disney online game for kids
6113UnofficialClub Penguin Disney online game for kids, Used by some Blizzard games497
6121-6122UnofficialLacewing networking extensions used in Clickteam Fusion.498
6136UnofficialObjectDB database server499
6159YesARINC 840 EFB Application Control Interface
6160UnofficialVeeam Installer Service
6161UnofficialVeeam vPower NFS Service
6162UnofficialVeeam Data Mover
6163UnofficialVeeam Hyper-V Integration Service
6164UnofficialVeeam WAN Accelerator
6165UnofficialVeeam WAN Accelerator Data Transfer
6167UnofficialVeeam Log Shipping Service
6170UnofficialVeeam Mount Server
6200UnofficialOracle WebCenter Content Portable: Content Server (With Native UI) and Inbound Refinery
6201AssignedThermo-Calc Software AB: Management of service nodes in a processing grid for thermodynamic calculations
UnofficialOracle WebCenter Content Portable: Admin
6225UnofficialOracle WebCenter Content Portable: Content Server Web UI
6227UnofficialOracle WebCenter Content Portable: JavaDB
6240UnofficialOracle WebCenter Content Portable: Capture
6244UnofficialOracle WebCenter Content Portable: Content Server—Intradoc Socket port
6255UnofficialOracle WebCenter Content Portable: Inbound Refinery—Intradoc Socket port
6257UnofficialWinMX (see also 6699)
6260Unofficialplanet M.U.L.E.
6262UnofficialSybase Advantage Database Server
6343YesSFlow, sFlow traffic monitoring
6346Yesgnutella-svc, gnutella (FrostWire, Limewire, Shareaza, etc.)
6347Yesgnutella-rtr, Gnutella alternate
6350YesApp Discovery and Access Protocol
6379YesRedis key-value data store
6389UnofficialEMC CLARiiON
6432YesPgBouncer—A connection pooler for PostgreSQL
6436UnofficialLeap Motion Websocket Server TLS
6437UnofficialLeap Motion Websocket Server
6443YesKubernetes API server 500
6444YesSun Grid Engine Qmaster Service
6445YesSun Grid Engine Execution Service
6454UnofficialArt-Net protocol
6463–6472UnofficialDiscord RPC501
6464YesPort assignment for medical device communication in accordance to IEEE 11073-20701
6513YesNETCONF over TLS
6514YesSyslog over TLS502
6515YesElipse RPC Protocol (REC)
6516UnofficialWindows Admin Center
6543UnofficialPylons project#Pyramid Default Pylons Pyramid web service port
6556UnofficialCheck MK Agent
6566YesSANE (Scanner Access Now Easy)—SANE network scanner daemon503
6560–6561UnofficialSpeech-Dispatcher daemon
6571UnofficialWindows Live FolderShare client
6600YesMicrosoft Hyper-V Live
UnofficialMusic Player Daemon (MPD)
6601YesMicrosoft Forefront Threat Management Gateway
6602YesMicrosoft Windows WSS Communication
6619Yesodette-ftps, Odette File Transfer Protocol (OFTP) over TLS/SSL
6622YesMulticast FTP
6626YesSemaphore Messenger
6653YesAssignedOpenFlow504
6660–6664UnofficialInternet Relay Chat (IRC)
6665–6669YesInternet Relay Chat (IRC)
6679YesOsorno Automation Protocol (OSAUT)
UnofficialInternet Relay Chat (IRC) SSL (Secure Internet Relay Chat)—often used
6690UnofficialSynology Cloud station
6697YesIRC SSL (Secure Internet Relay Chat)—often used
6699UnofficialWinMX (see also 6257)
6715UnofficialAberMUD and derivatives default port
6771UnofficialBitTorrent Local Peer Discovery
6783–6785UnofficialSplashtop Remote server broadcast
6801YesACNET Control System Protocol
6881–6887UnofficialBitTorrent beginning of range of ports used most often
6888YesMUSE
UnofficialBitTorrent continuation of range of ports used most often
6889–6900UnofficialBitTorrent continuation of range of ports used most often
6891–6900UnofficialWindows Live Messenger (File transfer)
6901UnofficialWindows Live Messenger (Voice)
UnofficialBitTorrent continuation of range of ports used most often
6902–6968UnofficialBitTorrent continuation of range of ports used most often
6924Yessplit-ping, ping with RX/TX latency/loss split
6935YesEthoScan Service
6936YesXenSource Management Service
6969Yesacmsoda
UnofficialBitTorrent tracker
6970–6999UnofficialBitTorrent end of range of ports used most often
UnofficialQuickTime Streaming Server505
6980UnofficialVoicemeeter VBAN network audio protocol506
7000UnofficialDefault for Vuze's built-in HTTPS Bittorrent tracker
UnofficialAvira Server Management Console
7001UnofficialAvira Server Management Console
UnofficialDefault for BEA WebLogic Server's HTTP server, though often changed during installation
7002UnofficialDefault for BEA WebLogic Server's HTTPS server, though often changed during installation
7005UnofficialDefault for BMC Software Control-M/Server and Control-M/Agent for Agent-to-Server, though often changed during installation
7006UnofficialDefault for BMC Software Control-M/Server and Control-M/Agent for Server-to-Agent, though often changed during installation
7010UnofficialDefault for Cisco AON AMC (AON Management Console)507
7022UnofficialMSSQL Server Replication and Database mirroring endpoints508
7023YesT2-NMCS Protocol for SatCom Modems
7025UnofficialZimbra LMTP [mailbox]—local mail delivery
7047UnofficialZimbra conversion server
7070UnofficialReal Time Streaming Protocol (RTSP), used by QuickTime Streaming Server. TCP is used by default, UDP is used as an alternate.509
7077YesDevelopment-Network Authentification-Protocol
7133UnofficialEnemy Territory: Quake Wars
7144UnofficialPeercast
7145UnofficialPeercast
7171UnofficialTibia
7262YesCNAP (Calypso Network Access Protocol)
7272YesWatchMe – WatchMe Monitoring
7306UnofficialZimbra mysql [mailbox]
7307UnofficialZimbra mysql [logger]
7312UnofficialSibelius License Server
7396UnofficialWeb control interface for Folding@home v7.3.6 and later510
7400YesRTPS (Real Time Publish Subscribe) DDS Discovery
7401YesRTPS (Real Time Publish Subscribe) DDS User-Traffic
7402YesRTPS (Real Time Publish Subscribe) DDS Meta-Traffic
7471UnofficialStateless Transport Tunneling (STT)
7473YesRise: The Vieneo Province
7474YesNeo4J Server webadmin511
7478YesDefault port used by Open iT Server.512
7542YesSaratoga file transfer protocol513514
7547YesCPE WAN Management Protocol (CWMP) Technical Report 069
7575UnofficialPopulous: The Beginning server
7624YesInstrument Neutral Distributed Interface
7631YesERLPhase
7634Unofficialhddtemp—Utility to monitor hard drive temperature
7652–7654UnofficialI2P anonymizing overlay network
7655UnofficialI2P SAM Bridge Socket API
7656–7660UnofficialI2P anonymizing overlay network
7659UnofficialPolypheny User Interface (database system)
7670UnofficialBrettspielWelt BSW Boardgame Portal
7680UnofficialDelivery Optimization for Windows 10515
7687YesBolt database connection
7707–7708UnofficialKilling Floor
7717UnofficialKilling Floor
7745UnofficialHomeBox
7777UnofficialiChat server file transfer proxy516
UnofficialOracle Cluster File System 2
UnofficialWindows backdoor program tini.exe default
UnofficialJust Cause 2: Multiplayer Mod Server
UnofficialTerraria default server
UnofficialUnofficialSuper Foosball multiplayer gameplay port
UnofficialSan Andreas Multiplayer (SA-MP) default port server
UnofficialSCP: Secret Laboratory Multiplayer Server
7777–7788YesSteam common default game server ports (Ark, L4D2, etc.)
7777–7788UnofficialUnreal Tournament series default server
7831UnofficialDefault used by Smartlaunch Internet Cafe Administration517 software
7880YesPowerSchool Gradebook Server518519
7890UnofficialDefault that will be used by the iControl Internet Cafe Suite Administration software
7915UnofficialDefault for YSFlight server520
7935UnofficialFixed port used for Adobe Flash Debug Player to communicate with a debugger (Flash IDE, Flex Builder or fdb).521
7946UnofficialDocker Swarm communication among nodes522
7979UnofficialUsed by SilverBluff Studios for communication between servers and clients.
7990UnofficialAtlassian Bitbucket (default port)
8000UnofficialCommonly used for Internet radio streams such as SHOUTcast, Icecast523 and iTunes Radio524
UnofficialDynamoDB Local525
UnofficialDjango Development Webserver526
UnofficialPython 3 http.server527
8005UnofficialTomcat remote shutdown528
UnofficialPLATO ASCII protocol (RFC 600)
UnofficialWindows SCCM HTTP listener service529
8006UnofficialQuest AppAssure 5 API530
UnofficialNoProxmox Virtual Environment admin web interface531
8007UnofficialQuest AppAssure 5 Engine532
8007YesProxmox Backup Server admin web interface
8008UnofficialAlternative port for HTTP. See also ports 80 and 8080.
UnofficialIBM HTTP Server administration default[importance?]
UnofficialiCal, a calendar application by Apple533
UnofficialNoMatrix homeserver federation over HTTP534
8009UnofficialApache JServ Protocol (ajp13)
8010UnofficialNoBuildbot web status page
8042UnofficialOrthanc – REST API over HTTP535
8061YesReservedNikatron Device Protocol (nikatron-dev)
8069UnofficialOpenERP 5.0 XML-RPC protocol536
8070UnofficialOpenERP 5.0 NET-RPC protocol537
8074YesGadu-Gadu
8075UnofficialKilling Floor web administration interface
8080YesAlternative port for HTTP. See also ports 80 and 8008.
UnofficialApache Tomcat538
UnofficialAtlassian JIRA applications539
8081YesSun Proxy Admin Service540
8088UnofficialAsterisk management access via HTTP
UnofficialYARN ResourceManager Web UI541
8089UnofficialNoSplunk daemon management542
UnofficialFritz!Box automatic TR-069 configuration543
8090UnofficialAtlassian Confluence544
UnofficialCoral Content Distribution Network (legacy; 80 and 8080 now supported)545
UnofficialMatrix identity server
8091UnofficialCouchBase web administration546
8092UnofficialCouchBase API547
8096UnofficialEmby and Jellyfin HTTP port548
8100UnofficialSaltoSystems - Pro Access Space Service
UnofficialBlueMap, a 3D Minecraft web viewer and mapping tool
8102UnofficialSaltoSystems - Used for LocalIO-Bridge for USB-Devices
8111UnofficialJOSM Remote Control
8112UnofficialPAC Pacifica Coin
8116UnofficialCheck Point Cluster Control Protocol
8118YesPrivoxy—advertisement-filtering Web proxy
8123UnofficialPolipo Web proxy
UnofficialHome Assistant Home automation
UnofficialMinecraft Dynmap plugin/mod
8124Unofficial
8125UnofficialStatsD server549550551
8139UnofficialPuppet (software) Client agent
8140YesPuppet (software) Master server
8172UnofficialMicrosoft Remote Administration for IIS Manager552
8181–8186UnofficialFRITZ!Box services
8184UnofficialNCSA Brown Dog Data Access Proxy
8188UnofficialComfyUI Web Interface
8194–8195YesBloomberg Terminal553
8200UnofficialGoToMyPC
UnofficialMiniDLNA media server Web Interface
UnofficialElastic APM Server
8222UnofficialVMware VI Web Access via HTTP554
8236UnofficialjRCS listener for Rocket Software jBASE Remote Connectivity Server555
8243YesHTTPS listener for Apache Synapse556
8245UnofficialDynamic DNS for at least No-IP and DynDNS557
8280YesHTTP listener for Apache Synapse558
8281UnofficialHTTP Listener for Gatecraft Plugin
8291UnofficialWinbox—Default on a MikroTik RouterOS for a Windows application used to administer MikroTik RouterOS559
8303UnofficialTeeworlds Server
8332UnofficialBitcoin JSON-RPC server560
8333UnofficialBitcoin561
UnofficialVMware VI Web Access via HTTPS562
8334UnofficialFilestash server (default) 563
8337UnofficialVisualSVN Distributed File System Service (VDFS)564
8384UnofficialSyncthing web GUI
8388UnofficialShadowsocks proxy server
8400YesCommvault Communications Service565 (GxCVD, found in all client computers)
8401YesCommvault Server Event Manager (GxEvMgrS, available in CommServe)
8403YesCommvault Firewall (GxFWD, tunnel port for HTTP/HTTPS)
8443UnofficialSW Soft Plesk Control Panel
UnofficialApache Tomcat SSL
UnofficialPromise WebPAM SSL
UnofficialiCal over SSL566
UnofficialMineOs WebUi
8444UnofficialBitmessage
UnofficialChia567
8448YesMatrix homeserver federation over HTTPS568
8484UnofficialMapleStory Login Server
8500UnofficialAdobe ColdFusion built-in web server569
8501UnofficialStreamlit Open-source Python framework for machine learning and data science
8530UnofficialWindows Server Update Services over HTTP, when using the default role installation settings in Windows Server 2012 and later versions.570571
8531UnofficialWindows Server Update Services over HTTPS, when using the default role installation settings in Windows Server 2012 and later versions.572573
8555UnofficialSymantec DLP OCR Engine 574
UnofficialChia JSON-RPC server575
8580UnofficialFreegate, an Internet anonymizer and proxy tool576
8601UnofficialWavestore VMS protocol 577
8611–8614YesCanon BubbleJet Network Protocol 578
8629UnofficialTibero database
8642UnofficialLotus Notes Traveler auto synchronization for Windows Mobile and Nokia devices579
8691UnofficialUltra Fractal, a fractal generation and rendering software application – distributed calculations over networked computers580581
8765UnofficialNoDefault port of a local GUN relay peer that the Internet Archive582 and others use as a decentralized mirror for censorship resistance.583
8767UnofficialVoice channel of TeamSpeak 2,584 a proprietary Voice over IP protocol targeted at gamers
8834UnofficialNessus, a vulnerability scanner – remote XML-RPC web server585[independent source needed]
8840UnofficialOpera Unite, an extensible framework for web applications586587
8880YesAlternate port of CDDB (Compact Disc Database) protocol, used to look up audio CD (compact disc) information over the Internet.588 See also port 888.
UnofficialIBM WebSphere Application Server SOAP connector589[jargon]
8883YesSecure MQTT (MQTT over TLS)590591
8887UnofficialHyperVM over HTTP
8888UnofficialHyperVM over HTTPS
UnofficialNoFreenet web UI (localhost only)
UnofficialDefault for IPython592 / Jupyter593 notebook dashboards
UnofficialMAMP594
8889UnofficialMAMP595
8920UnofficialJellyfin HTTPS port596
8983UnofficialApache Solr597
8997UnofficialAlternate port for I2P Monotone Proxy598[jargon]
8998UnofficialI2P Monotone Proxy599[jargon]
8999UnofficialAlternate port for I2P Monotone Proxy600[jargon]
9000UnofficialSonarQube Web Server601
UnofficialClickHouse default port
UnofficialDBGp
UnofficialSqueezeCenter web server & streaming
UnofficialUDPCast
UnofficialPlay Framework web server602
UnofficialHadoop NameNode default port
UnofficialPHP-FPM default port
UnofficialqBittorrent's embedded torrent tracker default port603
UnofficialEmidate
9001YesETL Service Manager604
UnofficialMicrosoft SharePoint authoring environment
Unofficialcisco-xremote router configuration
UnofficialTor network default (ORPort)
UnofficialDBGp Proxy
UnofficialHSQLDB default port
UnofficialEmidate
9002UnofficialNewforma Server comms
UnofficialEmidate
9003UnofficialXdebug default client port605
9006UnofficialTomcat in standalone mode606
9008UnofficialZerto VRA encrypted communications listener
9030UnofficialTor network default (DirPort)
9042UnofficialApache Cassandra native protocol clients
9043UnofficialWebSphere Application Server Administration Console secure
9050–9051UnofficialTor (SOCKS-5 proxy)
9060UnofficialWebSphere Application Server Administration Console
9080Yesglrpc, Groove Collaboration software GLRPC
UnofficialWebSphere Application Server HTTP Transport (port 1) default
UnofficialRemote Potato by FatAttitude, Windows Media Center addon
UnofficialServerWMC, Windows Media Center addon
9081UnofficialZerto ZVM to ZVM communication
9090UnofficialCockpit
UnofficialPrometheus metrics server
UnofficialOpenfire Administration console
UnofficialSqueezeCenter control (CLI)
UnofficialCherokee Admin panel
9091UnofficialOpenfire Administration console (SSL secured)
UnofficialTransmission (BitTorrent client) Web interface
9092UnofficialH2 (DBMS) Database server
UnofficialApache Kafka A Distributed Streaming Platform607
9095UnofficialNetworker Web user interface server
9100YesAssignedPDL Data Stream, used for printing to certain network printers608
9101YesBacula Director
9102YesBacula File Daemon
9103YesBacula Storage Daemon
9116UnofficialSNMP-exporter (Prometheus)609
9119YesMXit Instant Messenger
9150UnofficialTor browser
9191UnofficialSierra Wireless Airlink
9199UnofficialAvtex LLC—qStats
9200UnofficialElasticsearch610—default Elasticsearch port
9217UnofficialiPass Platform Service
9229UnofficialNodeJS debugging default port (localhost)611
9293UnofficialSony PlayStation RemotePlay612
9295UnofficialSony PlayStation Remote Play Session creation communication port
9296UnofficialSony PlayStation Remote Play
9297UnofficialSony PlayStation Remote Play Video stream
9300UnofficialIBM Cognos BI613
9303UnofficialD-Link Shareport Share storage and MFP printers
9306YesSphinx Native API
9309UnofficialSony PlayStation Vita Host Collaboration WiFi Data Transfer614
9312YesSphinx SphinxQL
9332UnofficialLitecoin JSON-RPC server
9333UnofficialLitecoin
9339UnofficialUsed by all Supercell games such as Brawl Stars and Clash of Clans, mobile freemium strategy video games
9389Yesadws, Microsoft AD DS Web Services, Powershell uses this port
9392UnofficialNoOpenVAS Greenbone Security Assistant web interface
9418Yesgit, Git pack transfer service
9419UnofficialMooseFS distributed file system – master control port615
9420UnofficialMooseFS distributed file system – master command port616
9421UnofficialMooseFS distributed file system – master client port617
9422UnofficialMooseFS distributed file system – Chunkservers618
9425UnofficialMooseFS distributed file system – CGI server619
9443UnofficialVMware Websense Triton console (HTTPS port used for accessing and administrating a vCenter Server via the Web Management Interface)
UnofficialNCSA Brown Dog Data Tilling Service
9535Yesmngsuite, LANDesk Management Suite Remote Control
9536Yeslaes-bf, IP Fabrics Surveillance buffering function
9600NoUnofficialFactory Interface Network Service (FINS), a network protocol used by Omron programmable logic controllers
9669UnofficialNoVGG Image Search Engine VISE620
9675UnofficialSpiceworks Desktop, IT Helpdesk Software
9676UnofficialSpiceworks Desktop, IT Helpdesk Software
9695YesContent centric networking (CCN, CCNx)
9735UnofficialBitcoin Lightning Network621
9785UnofficialViber622
9800YesWebDAV Source
UnofficialWebCT e-learning portal
9875UnofficialClub Penguin Disney online game for kids
9876UnofficialV Rising Dedicated server623
9877UnofficialV Rising Dedicated server624
9898UnofficialTripwire—File Integrity Monitoring Software625
9899YesSCTP tunneling (port number used in SCTP packets encapsulated in UDP, RFC 6951)
9901UnofficialBanana for Apache Solr
9981UnofficialTvheadend HTTP server (web interface)626
9982UnofficialTvheadend HTSP server (Streaming protocol)627
9987UnofficialNoTeamSpeak 3 server default (voice) port (for the conflicting service see the IANA list)628
9993UnofficialZeroTier Default port for ZeroTier
9997UnofficialSplunk port for communication between the forwarders and indexers
9999UnofficialUrchin Web Analytics
UnofficialDash (cryptocurrency)629
10000YesNetwork Data Management Protocol (NDMP) Control stream for network backup and restore.
UnofficialBackupExec
UnofficialWebmin, Web-based Unix/Linux system administration tool (default port)
10000–20000NoUnofficialUsed on VoIP networks for receiving and transmitting voice telephony traffic which includes Google Voice via the OBiTalk ATA devices as well as on the MagicJack and Vonage ATA network devices.630
10001UnofficialUbiquiti UniFi access points broadcast to 255.255.255.255:10001 (UDP) to locate the controller(s)
10009UnofficialCrossfire, a multiplayer online First Person Shooter
10011UnofficialNoTeamSpeak 3 ServerQuery631
10022UnofficialNoTeamSpeak 3 ServerQuery over SSH
10024UnofficialZimbra smtp [mta]—to amavis from postfix
10025UnofficialZimbra smtp [mta]—back to postfix from amavis
10042UnofficialMathoid server 632
10050YesZabbix agent
10051YesZabbix trapper
10110YesNMEA 0183 Navigational Data. Transport of NMEA 0183 sentences over TCP or UDP
10172UnofficialIntuit Quickbooks client
10200UnofficialFRISK Software International's fpscand virus scanning daemon for Unix platforms633
UnofficialFRISK Software International's f-protd virus scanning daemon for Unix platforms634
10201–10204UnofficialFRISK Software International's f-protd virus scanning daemon for Unix platforms635
10212YesGE Intelligent Platforms Proficy HMI/SCADA – CIMPLICITY WebView636
10308UnofficialDigital Combat Simulator Dedicated Server 637
10346NoTEKWorx Limited – interfaceIT board protocol
10468UnofficialFlyer – discovery protocol
10480UnofficialSWAT 4 Dedicated Server
10505UnofficialBlueStacks (android simulator) broadcast638
10514UnofficialTLS-enabled Rsyslog (default by convention)
10578UnofficialNoSkyrim Together multiplayer server for The Elder Scrolls V: Skyrim mod.
10800UnofficialTouhou versus games (Immaterial and Missing Power, Phantasmagoria of Flower View, Scarlet Weather Rhapsody, Hisoutensoku, Hopeless Masquerade and Urban Legend in Limbo)
10801UnofficialBag With Friends multiplayer server for the Peaks of Yore mod.
10823UnofficialFarming Simulator 2011
10891UnofficialJungle Disk (this port is opened by the Jungle Disk Monitor service on the localhost)
10933YesNoOctopus Deploy Tentacle deployment agent639
11100NoUnofficialRisk of Rain multiplayer server
11111UnofficialRiCcI, Remote Configuration Interface (Redhat Linux)
11112YesACR/NEMA Digital Imaging and Communications in Medicine (DICOM)
11211Unofficialmemcached640
11214Unofficialmemcached incoming SSL proxy
11215Unofficialmemcached internal outgoing SSL proxy
11235YesXCOMPUTE numerical systems messaging (Xplicit Computing)641
11311UnofficialRobot Operating System master
11371YesOpenPGP HTTP key server
11434UnofficialOllama to run LLM locally642
11753UnofficialOpenRCT2 multiplayer643
12000UnofficialCubeForm, Multiplayer SandBox Game
12012UnofficialAudition Online Dance Battle, Korea Server—Status/Version Check
12013UnofficialAudition Online Dance Battle, Korea Server
12035UnofficialSecond Life, used for server UDP in-bound644
12043UnofficialSecond Life, used for LSL HTTPS in-bound645
12046UnofficialSecond Life, used for LSL HTTP in-bound646
12201UnofficialGraylog Extended Log Format (GELF)647[importance?]
12222YesLight Weight Access Point Protocol (LWAPP) LWAPP data (RFC 5412)
12223YesLight Weight Access Point Protocol (LWAPP) LWAPP control (RFC 5412)
12307UnofficialMakerbot UDP Broadcast (client to printer) (JSON-RPC)648
12308UnofficialMakerbot UDP Broadcast (printer to client) (JSON-RPC)649
12345UnofficialCube World650
UnofficialLittle Fighter 2
UnofficialNetBus remote administration tool (often Trojan horse).
12443UnofficialIBM HMC web browser management access over HTTPS instead of default port 443651
12489UnofficialNSClient/NSClient++/NC_Net (Nagios)
12975UnofficialLogMeIn Hamachi (VPN tunnel software; also port 32976)—used to connect to Mediation Server (bibi.hamachi.cc); will attempt to use SSL (TCP port 443) if both 12975 & 32976 fail to connect
13000–13050UnofficialSecond Life, used for server UDP in-bound652
13008UnofficialCrossfire, a multiplayer online First Person Shooter
13075YesDefault653 for BMC Software Control-M/Enterprise Manager Corba communication, though often changed during installation
13400YesISO 13400 Road vehicles — Diagnostic communication over Internet Protocol (DoIP)
13720YesSymantec NetBackup—bprd (formerly VERITAS)
13721YesSymantec NetBackup—bpdbm (formerly VERITAS)
13724YesSymantec Network Utility—vnetd (formerly VERITAS)
13782YesSymantec NetBackup—bpcd (formerly VERITAS)
13783YesSymantec VOPIED protocol (formerly VERITAS)
13785YesSymantec NetBackup Database—nbdb (formerly VERITAS)
13786YesSymantec nomdb (formerly VERITAS)
14550UnofficialMAVLink Ground Station Port
14567UnofficialBattlefield 1942 and mods
14652UnofficialRepgen DoxBox reporting tool
14800UnofficialAge of Wonders III p2p port654
15000UnofficialpsyBNC
UnofficialWesnoth
UnofficialKaspersky Network Agent655
UnofficialTeltonika networks remote management system (RMS)
15009UnofficialTeltonika networks remote management system (RMS)
15010UnofficialTeltonika networks remote management system (RMS)
15441UnofficialZeroNet fileserver
15567UnofficialBattlefield Vietnam and mods
15345YesXPilot Contact
15672UnofficialNoRabbitMQ management plugin656
16000UnofficialOracle WebCenter Content: Imaging (formerly known as Oracle Universal Content Management). Port though often changed during installation
UnofficialshroudBNC
16080UnofficialmacOS Server Web (HTTP) service with performance cache657
16200UnofficialOracle WebCenter Content: Content Server (formerly known as Oracle Universal Content Management). Port though often changed during installation
16225UnofficialOracle WebCenter Content: Content Server Web UI. Port though often changed during installation
16250UnofficialOracle WebCenter Content: Inbound Refinery (formerly known as Oracle Universal Content Management). Port though often changed during installation
16261UnofficialProject Zomboid multiplayer. Additional sequential ports used for each player connecting to server.
16300UnofficialOracle WebCenter Content: Records Management (formerly known as Oracle Universal Records Management). Port though often changed during installation
16379UnofficialRedis Cluster bus658
16384UnofficialCISCO Default RTP MIN
16384–16403UnofficialReal-time Transport Protocol (RTP), RTP Control Protocol (RTCP), used by Apple's iChat for audio and video659
16384–16387UnofficialReal-time Transport Protocol (RTP), RTP Control Protocol (RTCP), used by Apple's FaceTime and Game Center660
16393–16402UnofficialReal-time Transport Protocol (RTP), RTP Control Protocol (RTCP), used by Apple's FaceTime and Game Center661
16403–16472UnofficialReal-time Transport Protocol (RTP), RTP Control Protocol (RTCP), used by Apple's Game Center662
16400UnofficialOracle WebCenter Content: Capture (formerly known as Oracle Document Capture). Port though often changed during installation
16567UnofficialBattlefield 2 and mods
17000UnofficialM17 – Digital RF voice and data protocol with Internet (UDP) gateways (reflectors).663
17011UnofficialWorms multiplayer
17224YesTrain Realtime Data Protocol (TRDP) Process Data, network protocol used in train communication.664665
17225YesTrain Realtime Data Protocol (TRDP) Message Data, network protocol used in train communication.666667
17333UnofficialCS Server (CSMS), default binary protocol port
17472UnofficialTanium Communication Port
17474UnofficialDMXControl 3 Network Discovery668
17475UnofficialDMXControl 3 Network Broker669
17476UnofficialDMXControl 3 Network Broker TLS670
17500YesDropbox LanSync Protocol (db-lsp); used to synchronize file catalogs between Dropbox clients on a local network.
18080UnofficialNoMonero P2P network communications
18081UnofficialNoMonero incoming RPC calls
18091Unofficialmemcached Internal REST HTTPS for SSL
18092Unofficialmemcached Internal CAPI HTTPS for SSL
18104YesRAD PDF Service
18200UnofficialAudition Online Dance Battle, AsiaSoft Thailand Server status/version check
18201UnofficialAudition Online Dance Battle, AsiaSoft Thailand Server
18206UnofficialAudition Online Dance Battle, AsiaSoft Thailand Server FAM database
18300UnofficialAudition Online Dance Battle, AsiaSoft SEA Server status/version check
18301UnofficialAudition Online Dance Battle, AsiaSoft SEA Server
18306UnofficialAudition Online Dance Battle, AsiaSoft SEA Server FAM database
18333UnofficialBitcoin testnet
18400UnofficialAudition Online Dance Battle, KAIZEN Brazil Server status/version check
18401UnofficialAudition Online Dance Battle, KAIZEN Brazil Server
18505UnofficialAudition Online Dance Battle R4p3 Server, Nexon Server status/version check
18506UnofficialAudition Online Dance Battle, Nexon Server
18605UnofficialX-BEAT status/version check
18606UnofficialX-BEAT
18676UnofficialYouView
18769YesiQue Protocol
19000UnofficialAudition Online Dance Battle, G10/alaplaya Server status/version check
UnofficialJACK sound server
19001UnofficialAudition Online Dance Battle, G10/alaplaya Server
19132UnofficialMinecraft: Bedrock Edition multiplayer server671
19133UnofficialMinecraft: Bedrock Edition IPv6 multiplayer server672
19150UnofficialGkrellm Server
19226UnofficialPanda Software AdminSecure Communication Agent
19294UnofficialGoogle Talk Voice and Video connections673
19295UnofficialGoogle Talk Voice and Video connections674
19302UnofficialGoogle Talk Voice and Video connections675
19531UnofficialNosystemd-journal-gatewayd676
19532UnofficialNosystemd-journal-remote677
19788NoYesMesh Link Establishment protocol for IEEE 802.15.4 radio mesh networks678
19771UnofficialSoftros LAN Messenger uses TCP and UDP ports for collecting user lists and sending messages679
19812YesNo4D database SQL Communication680
19813Yes4D database Client Server Communication681
19814Yes4D database DB4D Communication682
19880UnofficialSoftros LAN Messenger uses TCP port for file transfers683
19999YesDistributed Network Protocol—Secure (DNP—Secure), a secure version of the protocol used in SCADA systems between communicating RTU's and IED's
20000YesDistributed Network Protocol (DNP), a protocol used in SCADA systems between communicating RTU's and IED's
YesOpenWebNet, communications protocol used in Bticino products
UnofficialUsermin, Web-based Unix/Linux user administration tool (default port)
UnofficialUsed on VoIP networks for receiving and transmitting voice telephony traffic which includes Google Voice via the OBiTalk ATA devices as well as on the MagicJack and Vonage ATA network devices.684
20560UnofficialKilling Floor
20580UnofficialUnofficialWalljam device communications
20581UnofficialUnofficialWalljam device communications
20595Unofficial0 A.D. Empires Ascendant
20808UnofficialAbleton Link
21025UnofficialStarbound Server (default), Starbound685
21064UnofficialDefault Ingres DBMS server
22000UnofficialSyncthing (default)
22136UnofficialFLIR Systems686 Camera Resource Protocol
22222UnofficialDavis Instruments, WeatherLink IP687
22347YesWibuKey, WIBU-SYSTEMS AG Copy protection
22350YesCodeMeter, WIBU-SYSTEMS AG Copy protection
22351YesCodeMeter-CmWAN, WIBU-SYSTEMS AG Copy protection
23073UnofficialSoldat Dedicated Server
23399UnofficialSkype default protocol
23513UnofficialDuke Nukem 3D source ports
24441UnofficialPyzor spam detection network
24444UnofficialNetBeans integrated development environment
24465YesTonido Directory Server for Tonido688 which is a Personal Web App and P2P platform
24554YesBINKP, Fidonet mail transfers over TCP/IP
24800UnofficialSynergy: keyboard/mouse sharing software
24842UnofficialStepMania: Online: Dance Dance Revolution Simulator
25565UnofficialMinecraft (Java Edition) multiplayer server689690
UnofficialMinecraft (Java Edition) multiplayer server query691
25575UnofficialMinecraft (Java Edition) multiplayer server RCON692
25734-25735UnofficialSOLIDWORKS SolidNetworkLicense Manager693
25826Unofficialcollectd default port694
26000Yesid Software's Quake server
UnofficialEVE Online, iVentoy webGUI (see Ventoy)
UnofficialXonotic, an open-source arena shooter
26822UnofficialMSI MysticLight
26900–26901UnofficialEVE Online
26909–26911UnofficialAction Tanks Online
27000UnofficialPowerBuilder SySAM license server
27000–27006Unofficialid Software's QuakeWorld master server
27000–27009YesFlexNet Publisher's License server (from the range of default ports)
27000–27015NoUnofficialSteam (game client traffic)695
27015NoUnofficialGoldSrc, Source engine and Source 2 engine dedicated server port696
27015–27018UnofficialUnturned, a survival game
27015–27030NoUnofficialSteam (matchmaking and HLTV)697
UnofficialSteam (downloads)698
27016UnofficialMagicka and Space Engineers server port
27017UnofficialNoMongoDB daemon process (mongod) and routing service (mongos)699
27031–27035NoUnofficialSteam (In-Home Streaming)700
27036UnofficialSteam (In-Home Streaming)701
27100UnofficialScreen Play Games controller
27374UnofficialSub7 default.
27500–27900Unofficialid Software's QuakeWorld
27888UnofficialKaillera server
27901–27910Unofficialid Software's Quake II master server
27950UnofficialOpenArena outgoing
27960–27969UnofficialActivision's Enemy Territory and id Software's Quake III Arena, Quake III and Quake Live and some ioquake3 derived games, such as Urban Terror (OpenArena incoming)
28000YesSiemens Digital Industries Software license server702
28001UnofficialStarsiege: Tribes
28015UnofficialRust (video game)703
28016UnofficialRust (video game) RCON704
28200AssignedVoxelStorm game server
28260UnofficialPalo Alto Networks' Panorama HA-1 backup unencrypted sync port.705
28443UnofficialPalo Alto Networks' Panorama-to-managed devices software updates, PAN-OS 8.0 and later.706
28769UnofficialPalo Alto Networks' Panorama HA unencrypted sync port.707
28770UnofficialPalo Alto Networks' Panorama HA-1 backup sync port.708
28770–28771UnofficialAssaultCube Reloaded, a video game based upon a modification of AssaultCube
28785–28786UnofficialCube 2: Sauerbraten709
28852UnofficialKilling Floor
28910UnofficialNintendo Wi-Fi Connection710
28960UnofficialCall of Duty; Call of Duty: United Offensive; Call of Duty 2; Call of Duty 4: Modern Warfare Call of Duty: World at War (PC platform)711
29000YesSiemens Digital Industries Software license server712
29070UnofficialJedi Knight: Jedi Academy by Ravensoft
29900–29901UnofficialNintendo Wi-Fi Connection713
29920UnofficialNintendo Wi-Fi Connection714
30000UnofficialXLink Kai P2P
UnofficialLuanti server default port715
UnofficialFoundry Virtual Tabletop server default port716
30003YesYesAmicon FPSU-IP Remote Administration
30004YesYesAmicon FPSU-IP VPN
30033UnofficialNoTeamSpeak 3 File Transfer717
30120UnofficialFivem (Default Port) GTA V multiplayer718719
30564UnofficialMultiplicity: keyboard/mouse/clipboard sharing software
30814UnofficialBeamMP: Unofficial BeamNG.drive multiplayer mod. Default server port
31337UnofficialBack Orifice and Back Orifice 2000 remote administration tools720721
Unofficialncat, a netcat alternative722
31416UnofficialBOINC RPC723
31438UnofficialRocket U2724
31457YesTetriNET
32137UnofficialImmunet Protect (UDP in version 2.0,725 TCP since version 3.0726)
32400YesPlex Media Server727
32764UnofficialA backdoor found on certain Linksys, Netgear and other wireless DSL modems/combination routers728
32887UnofficialAce of Spades, a multiplayer FPS video game
32976UnofficialLogMeIn Hamachi, a VPN application; also TCP port 12975 and SSL (TCP 443).729
33434Yestraceroute
33848UnofficialJenkins, a continuous integration (CI) tool730731
34000UnofficialInfestation: Survivor Stories (formerly known as The War Z), a multiplayer zombie video game[verification needed]
34197NoUnofficialFactorio, a multiplayer survival and factory-building game732
35357YesOpenStack Identity (Keystone) administration733[self-published source?]
36330UnofficialFolding@home Control Port
37008UnofficialTZSP intrusion detection
38412YesNG Application Protocol (NGAP) for communication between a gNB and AMF in 5G core networks734735
40000YesSafetyNET p – a real-time Industrial Ethernet protocol
41121YesReservedTentacle Server736Pandora FMS
41230AssignedYesZ-Wave Protocol over DTLS737
41794YesCrestron Control Port738Crestron Electronics
41795YesCrestron Terminal Port739Crestron Electronics
41796YesNoCrestron Secure Control Port740Crestron Electronics
41797YesNoCrestron Secure Terminal Port741Crestron Electronics
42081–42090YesZippin –Zippin Store742
42590–42595YesGlue – MakePro X743
42999YesCuriosity 744
43110UnofficialZeroNet web UI default port 745
43594–43595UnofficialRuneScape746
44123AssignedUnofficialZ-Wave Secure Tunnel747
44405UnofficialMu Online Connect Server
44818YesEtherNet/IP explicit messaging
47808–47823YesBACnet Building Automation and Control Networks (4780810 = BAC016 to 4782310 = BACF16)
48556Yesdrive.web AC/DC Drive Automation and Control Networks 748
48656UnofficialBrainy LAB749 Control Server
48657UnofficialBrainy LAB750 Control Server
49151Reserved"IANA Reserved"751

Dynamic, private or ephemeral ports

See also: Ephemeral port

The range 49152–65535 (215 + 214 to 216 − 1), 16 384 ports, contains dynamic or private ports that cannot be registered with IANA.752 This range is used for private or customized services, for temporary purposes, and for automatic allocation of ephemeral ports.

Dynamic, private or ephemeral ports
PortTCPUDPSCTPDCCPDescription
49152–65535UnofficialNoCertificate Management over CMS753 and Xsan Filesystem Access754
49160UnofficialPalo Alto Networks' Panorama.755
50160UnofficialS-CONNECT protocol - data exchange (TCP) and manual device pairing (UDP).756
50161UnofficialS-CONNECT protocol - automatic device pairing.757
51413UnofficialTransmission (BitTorrent client)758
51515UnofficialKopia server 759
51820NoUnofficialWireGuard protocol760
52380NoUnofficialSony VISCA Network Setting Protocol761
52381NoUnofficialSony VISCA over IP Protocol762
59100UnofficialAudioRelay763
60000–61000NoUnofficialRange from which Mosh – a remote-terminal application similar to SSH – typically assigns ports for ongoing sessions between Mosh servers and Mosh clients.764
61616UnofficialActiveMQ Classic 765
62078UnofficialApple's lockdownd protocol – used for communicating with iPhones and iPads.766
64738UnofficialMumble767

Note

See also

768

References and notes

  • Stretch, Jeremy. "Common Ports" (PDF). PacketLife.net. Archived (PDF) from the original on 2018-03-28. Retrieved 2019-02-09.

Further reading

References

  1. "Service Name and Transport Protocol Port Number Registry". Internet Assigned Numbers Authority. Retrieved 8 October 2023. https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xml

  2. "Service Name and Transport Protocol Port Number Registry". The Internet Assigned Numbers Authority (IA). https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt

  3. "Service Name and Transport Protocol Port Number Registry". The Internet Assigned Numbers Authority (IA). https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt

  4. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  5. Touch, Joe (August 2015). Recommendations on Using Assigned Transport Port Numbers. IETF. doi:10.17487/RFC7605. BCP 165. RFC 7605. Retrieved 2018-04-08. https://datatracker.ietf.org/doc/html/rfc7605

  6. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  7. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  8. services(5) – Linux File Formats Manual. "... Port numbers below 1024 (so-called "low numbered" ports) can only be bound to by root ... Well-known port numbers specified by the IANA are normally located in this root-only space. ..." https://linux.die.net/man/5/services

  9. "Linux/net/ipv4/inet_connection_sock.c". LXR. Archived from the original on 2015-04-02. Retrieved 2015-01-17. https://web.archive.org/web/20150402103756/http://lxr.free-electrons.com/source/net/ipv4/inet_connection_sock.c?v=3.18#L89

  10. "Service Name and Transport Protocol Port Number Registry". The Internet Assigned Numbers Authority (IA). https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt

  11. Lottor, M. (November 1988). TCP Port Service Multiplexer (TCPMUX). IETF. pp. 1–2. doi:10.17487/RFC1078. RFC 1078. Retrieved 2016-09-28. https://datatracker.ietf.org/doc/html/rfc1078

  12. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  13. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  14. Bressler, Rober; Guida, Richard; McKenzie, Alex (16 October 1972). Remote Job Entry Protocol. IETF. doi:10.17487/RFC0407. RFC 407. Retrieved 2018-04-08. https://datatracker.ietf.org/doc/html/rfc407

  15. Bierman, A.; Bucci, C.; Iddon, R. (August 2000). Remote Network Monitoring MIB Protocol Identifier Macros. IETF. doi:10.17487/RFC2896. RFC 2896. Retrieved 2018-07-13. https://datatracker.ietf.org/doc/html/rfc2896

  16. Postel, J. (May 1983). Echo Protocol. IETF. p. 1. doi:10.17487/RFC0862. STD 20. RFC 862. Retrieved 2016-09-28. /wiki/Jon_Postel

  17. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  18. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc4960

  19. Postel, J. (May 1983). Discard Protocol. IETF. p. 1. doi:10.17487/RFC0863. STD 21. RFC 863. Retrieved 2016-10-07. /wiki/Jon_Postel

  20. "How to Configure the Ports Used for Wake On LAN". Microsoft TechNet. n.d. Archived from the original on 2016-09-27. Retrieved 2016-09-27. ... The default port for the wake-up transmission is UDP port 9. ... https://technet.microsoft.com/en-us/library/bb632665.aspx

  21. "systat and netstat". eTutorials. ... The ps -ef and netstat -a commands are bound to TCP ports 11 and 15, respectively.  ... http://etutorials.org/Networking/network+security+assessment/Chapter+5.+Assessing+Remote+Information+Services/5.2+systat+and+netstat

  22. Postel, J. (May 1983). Active Users. IETF. doi:10.17487/RFC0866. STD 24. RFC 866. /wiki/Jon_Postel

  23. Postel, J. (May 1983). Daytime Protocol. IETF. p. 1. doi:10.17487/RFC0867. STD 25. RFC 867. Retrieved 2016-09-27. /wiki/Jon_Postel

  24. "Service Name and Transport Protocol Port Number Registry". The Internet Assigned Numbers Authority (IA). https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt

  25. "systat and netstat". eTutorials. ... The ps -ef and netstat -a commands are bound to TCP ports 11 and 15, respectively.  ... http://etutorials.org/Networking/network+security+assessment/Chapter+5.+Assessing+Remote+Information+Services/5.2+systat+and+netstat

  26. Postel, J. (May 1983). Quote of the Day Protocol. IETF. p. 1. doi:10.17487/RFC0865. STD 23. RFC 865. Retrieved 2016-09-27. /wiki/Jon_Postel

  27. Nelson, Russell (June 1990). Message Send Protocol. IETF. p. 1. doi:10.17487/RFC1159. RFC 1159. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc1159#page-1

  28. Nelson, Russell; Arnold, Geoff (April 1992). Message Send Protocol 2. IETF. pp. 3–4. doi:10.17487/RFC1312. RFC 1312. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc1312

  29. Postel, J. (May 1983). Character Generator Protocol. IETF. p. 1. doi:10.17487/RFC0864. STD 22. RFC 864. Retrieved 2016-09-27. /wiki/Jon_Postel

  30. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc4960

  31. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  32. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc4960

  33. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  34. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc4960

  35. Postel, J. (June 1980). File Transfer Protocol specification. IETF. p. 57. doi:10.17487/RFC0765. RFC 765. IEN 149. Retrieved 2016-09-27. /wiki/Jon_Postel

  36. Postel, J.; Reynolds, J. (October 1985). File Transfer Protocol. IETF. p. 59. doi:10.17487/RFC0959. STD 9. RFC 959. Retrieved 2016-09-27. /wiki/Jon_Postel

  37. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc4960

  38. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  39. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  40. Postel, J.; Reynolds, J. (May 1983). Telnet Protocol Specification. IETF. p. 15. doi:10.17487/RFC0854. STD 8. RFC 854. Retrieved 2016-09-28. /wiki/Jon_Postel

  41. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  42. Postel, Jonathan B. (August 1982). Simple Mail Transfer Protocol. IETF. p. 44. doi:10.17487/RFC0821. STD 10. RFC 821. Retrieved 2016-09-28. /wiki/Jon_Postel

  43. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  44. "National Software Works, Status report no.1" (PDF). apps.dtic.mil. Retrieved 16 September 2024. https://apps.dtic.mil/sti/tr/pdf/ADA034133.pdf

  45. "HA Links and Backup Links". docs.paloaltonetworks.com. Palo Alto Networks. Retrieved 14 September 2020. https://docs.paloaltonetworks.com/pan-os/9-1/pan-os-admin/high-availability/ha-concepts/ha-links-and-backup-links.html

  46. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  47. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  48. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  49. Postel, J.; Harrenstien, K. (May 1983). Time Protocol. IETF. pp. 1–2. doi:10.17487/RFC0868. STD 26. RFC 868. Retrieved 2016-09-28. /wiki/Jon_Postel

  50. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  51. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  52. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  53. Postel, J. (August 1979). Internet Name Server. IETF. IEN 116. Retrieved 2016-09-28. /wiki/Jon_Postel

  54. Harrenstien, Ken; White, Vic (1982-03-01). NICNAME/WHOIS. IETF. p. 1. doi:10.17487/RFC0812. RFC 812. Retrieved 2016-09-28. https://datatracker.ietf.org/doc/html/rfc812#page-1

  55. Harrenstien, K.; Stahl, M.; Feinler, E. (October 1985). NICNAME/WHOIS. IETF. p. 2. doi:10.17487/RFC0954. RFC 954. Retrieved 2016-09-28. https://datatracker.ietf.org/doc/html/rfc954#page-2

  56. Daigle, Leslie (September 2004). WHOIS Protocol Specification. Ran Atkinson, Ken Harrenstien, Mary Stahl, Elizabeth Feinler. IETF. p. 2. doi:10.17487/RFC3912. RFC 3912. Retrieved 2016-09-28. https://datatracker.ietf.org/doc/html/rfc3912#page-2

  57. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  58. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  59. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  60. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  61. Finseth, Craig A. (July 1993). An Access Control Protocol, Sometimes Called TACACS. IETF. p. 7. doi:10.17487/RFC1492. RFC 1492. Retrieved 2016-09-28. https://datatracker.ietf.org/doc/html/rfc1492#page-7

  62. TACACS+ Team (15 April 2018). The TACACS+ Protocol. IETF. I-D opsawg-tacacs-10. Retrieved 2018-07-18. https://datatracker.ietf.org/doc/html/opsawg-tacacs-10

  63. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  64. Malis, Andrew G. (May 1983). "IMP Logical Addressing Implementation Specification, report 5256" (PDF). BBN – Bolt Beranek and Newman Inc. Retrieved 2018-07-18. http://xn--brwolff-5wa.de/bbn-arpanet-reports-collection/BBN%20(1983)%20Logical%20Addressing%20Implementation%20Specification%20(Report%205256).pdf

  65. IBM Corp. (14 September 2002). "AIX 5.2 Communications Programming Concepts, Chapter 12. Xerox Network System". Retrieved 2018-07-25. http://ps-2.kev009.com/wisclibrary/aix52/usr/share/man/info/en_US/a_doc_lib/aixprggd/progcomc/ch12_xns.htm

  66. Mockapetris, P. (November 1987). DNS Implementation and Specification. IETF. doi:10.17487/RFC1035. RFC 1035. Retrieved 2018-07-18. https://datatracker.ietf.org/doc/html/rfc1035

  67. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  68. IBM Corp. (14 September 2002). "AIX 5.2 Communications Programming Concepts, Chapter 12. Xerox Network System". Retrieved 2018-07-25. http://ps-2.kev009.com/wisclibrary/aix52/usr/share/man/info/en_US/a_doc_lib/aixprggd/progcomc/ch12_xns.htm

  69. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  70. IBM Corp. (14 September 2002). "AIX 5.2 Communications Programming Concepts, Chapter 12. Xerox Network System". Retrieved 2018-07-25. http://ps-2.kev009.com/wisclibrary/aix52/usr/share/man/info/en_US/a_doc_lib/aixprggd/progcomc/ch12_xns.htm

  71. IBM Corp. (14 September 2002). "AIX 5.2 Communications Programming Concepts, Chapter 12. Xerox Network System". Retrieved 2018-07-25. http://ps-2.kev009.com/wisclibrary/aix52/usr/share/man/info/en_US/a_doc_lib/aixprggd/progcomc/ch12_xns.htm

  72. Reynolds, J.; Postel, J. (March 1990). Assigned Numbers. IETF. p. 9. doi:10.17487/RFC1060. RFC 1060. Retrieved 2018-07-24. https://datatracker.ietf.org/doc/html/rfc1060#page-9

  73. Bennett, C. J. (January 1981). "A Simple NIFTP-Based Mail System". INDRA. Retrieved 2018-07-18. https://www.rfc-editor.org/ien/ien169.txt

  74. "Service Name and Transport Protocol Port Number Registry". The Internet Assigned Numbers Authority (IA). https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt

  75. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  76. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  77. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  78. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  79. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  80. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  81. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  82. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  83. Sollins, Karen R. (1980-01-29). The TFTP Protocol. IETF. p. 6. IEN 133. Retrieved 2016-10-16. https://www.rfc-editor.org/ien/ien133.txt#page-6

  84. Sollins, K.R. (June 1981). TFTP Protocol (revision 2). Noel Chiappa, Bob Baldwin, Dave Clark, Steve Szymanski, Larry Allen, Geoff Cooper, Mike Greenwald, Liza Martin, David Reed. IETF. pp. 6, 14, 16. doi:10.17487/RFC0783. RFC 783. Retrieved 2016-10-16. https://datatracker.ietf.org/doc/html/rfc783

  85. Sollins, Karen R. (July 1992). The TFTP Protocol (Revision 2). IETF. pp. 4–5, 9, 10. doi:10.17487/RFC1350. STD 33. RFC 1350. Retrieved 2016-10-16. https://datatracker.ietf.org/doc/html/rfc1350

  86. Anklesaria, Farhad; McCahill, M.; Lindner, Paul; Johnson, David; Torrey, Daniel; Alberti, Bob (March 1993). The Internet Gopher Protocol (a distributed document search and retrieval protocol). IETF. pp. 1, 4–5, 7, 11–13. doi:10.17487/RFC1436. RFC 1436. Retrieved 2016-10-16. ... This protocol assumes a reliable data stream; TCP is assumed. Gopher servers should listen on port 70 (port 70 is assigned to Internet Gopher by IANA). ... /wiki/Mark_P._McCahill

  87. Braden, R. (1971-01-13). NETRJS: A third level protocol for Remote Job Entry. IETF. doi:10.17487/RFC0088. RFC 88. Retrieved 2016-10-16. https://datatracker.ietf.org/doc/html/rfc88

  88. Braden, R. (1977-11-22). NETRJS Protocol. IETF. p. 3. doi:10.17487/RFC0740. RFC 740. Retrieved 2016-10-16. https://datatracker.ietf.org/doc/html/rfc740#page-3

  89. Postel, Jon; Vernon, J. (January 1983). Assigned Numbers. IETF. p. 10. doi:10.17487/RFC0820. RFC 820. Retrieved 2016-10-16. /wiki/Jon_Postel

  90. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  91. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  92. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  93. Karrenstien, K. (1977-12-30). NAME/FINGER Protocol. IETF. p. 1. doi:10.17487/RFC0742. RFC 742. Retrieved 2016-10-16. https://datatracker.ietf.org/doc/html/rfc742#page-1

  94. Zimmerman, David Paul (December 1991). "Flow of events". The Finger User Information Protocol. IETF. p. 4. sec. 2.1. doi:10.17487/RFC1288. RFC 1288. Retrieved 2016-10-16. ... Finger is based on the Transmission Control Protocol, using TCP port 79 decimal ... https://datatracker.ietf.org/doc/html/rfc1288#section-2.1

  95. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc4960

  96. Fielding, Roy T.; Reschke, Julian F., eds. (June 2014). Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing. IETF. pp. 11, 17, 19, 42–43, 50. doi:10.17487/RFC7230. RFC 7230. Retrieved 2016-10-16. /wiki/Roy_Fielding

  97. Belshe, Mike; Peon, Roberto (May 2015). "Starting HTTP/2". In Thomson, Martin (ed.). Hypertext Transfer Protocol Version 2 (HTTP/2). IETF. p. 7. sec. 3. doi:10.17487/RFC7540. RFC 7540. Retrieved 2016-10-16. ... HTTP/2 uses the same "http" and "https" URI schemes used by HTTP/1.1. HTTP/2 shares the same default port numbers: 80 for "http" URIs and 443 for "https" URIs. ... /wiki/Mike_Belshe

  98. Iyengar, J.; Thomson, M. QUIC: A UDP-Based Multiplexed and Secure Transport. IETF. I-D ietf-quic-transport. Retrieved 2018-07-25. https://tools.ietf.org/html/draft-ietf-quic-transport-13

  99. Britton, T., Liu-Johnston, I., Cugnière, I., Gupta, S., Rodriguez, D., Barbier, J., & Tricaud, S. Analysis of 24 hours internet attacks.

  100. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  101. "Using Nmap for Outbound Traffic Analysis". Hacking Practical Protection. Warsaw, Poland: Hakin9 Media. 2013.

  102. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  103. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  104. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  105. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  106. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  107. Kohl, John; Neuman, B. Clifford (September 1993). "IP transport". The Kerberos Network Authentication Service (V5). IETF. pp. 81–82. sec. 8.2.1. doi:10.17487/RFC1510. RFC 1510. Retrieved 2016-10-16. ... When contacting a Kerberos server (KDC) ... the client shall send a UDP datagram containing only an encoding of the request to port 88 (decimal) at the KDC's IP address ... https://datatracker.ietf.org/doc/html/rfc1510#section-8.2.1

  108. Neuman, Clifford; Yu, Tom; Hartman, Sam; Raeburn, Kenneth (July 2005). The Kerberos Network Authentication Service (V5). Acknowledgements to John Kohl et al. in section 11 "Acknowledgements", pages 121–122. IETF. pp. 102–103, 105. doi:10.17487/RFC4120. RFC 4120. Retrieved 2016-10-16. ... Kerberos servers (KDCs) supporting IP transports MUST accept TCP ... UDP requests and SHOULD listen for them on port 88 (decimal) ... https://datatracker.ietf.org/doc/html/rfc4120

  109. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  110. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  111. "Service Name and Transport Protocol Port Number Registry". The Internet Assigned Numbers Authority (IA). https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.txt

  112. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  113. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  114. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  115. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  116. Crispin, Mark (7 October 1977). SUPDUP Protocol. IETF. pp. 15. doi:10.17487/RFC0734. RFC 734. Retrieved 2019-09-24. https://datatracker.ietf.org/doc/html/rfc734

  117. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  118. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  119. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  120. Michelle Cotton; Lars Eggert; et al. (August 2011). Internet Assigned Numbers Authority (IANA) Procedures for the Management of the Service Name and Transport Protocol Port Number Registry. IETF. doi:10.17487/RFC6335. BCP 165. RFC 6335. Retrieved 2014-04-01. https://datatracker.ietf.org/doc/html/rfc6335

  121. Harrenstien, K.; Stahl, M.; Feinler, E. (October 1985). HOSTNAME SERVER. IETF. pp. 1. doi:10.17487/RFC953. RFC 953. Retrieved 2018-07-26. https://datatracker.ietf.org/doc/html/rfc953

  122. Cass, D. E.; Rose, M. T. (April 1986). ISO Transport Services on Top of the TCP. IETF. pp. 5, 8, 12–13, 23–24. doi:10.17487/RFC0983. RFC 983. Retrieved 2016-10-17. ... A TSAP server begins by LISTENing on TCP port 102. ... https://datatracker.ietf.org/doc/html/rfc983

  123. Rose, Marshall T.; Cass, Dwight E. (May 1987). ISO Transport Service on top of the TCP Version: 3. IETF. pp. 1, 13. doi:10.17487/RFC1006. STD 35. RFC 1006. Retrieved 2016-10-17. ... TCP port 102 is reserved for hosts which implement this standard. ... https://datatracker.ietf.org/doc/html/rfc1006

  124. Hedberg, Roland; Pomes, Paul (September 1998). "Basic Operation". The CCSO Nameserver (Ph) Architecture. IETF. p. 4. sec. 2. doi:10.17487/RFC2378. RFC 2378. Retrieved 2016-10-17. ... Initially, the server host starts the Ph service by listening on TCP port 105. ... https://datatracker.ietf.org/doc/html/rfc2378#section-2

  125. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  126. Postel, Jon (November 1982). The Remote User Telnet Service. IETF. p. 1. doi:10.17487/RFC0818. RFC 818. Retrieved 2016-10-17. ... the specific service of User Telnet may be accessed (on hosts that choose to provide it) by opening a connection to port 107 (153 octal). ... /wiki/Jon_Postel

  127. Butler, M.; Postel, J.; Chase, D.; Goldberger, J.; Reynolds, J. K. (February 1985). Post Office Protocol: Version 2. IETF. p. 1. doi:10.17487/RFC0937. RFC 937. Retrieved 2016-10-17. ... This protocol assumes a reliable data stream such as provided by TCP or any similar protocol. When TCP is used, the POP2 server listens on port 109 ... /wiki/Jon_Postel

  128. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  129. Rose, Marshall (November 1988). Post Office Protocol: Version 3. IETF. pp. 2, 13. doi:10.17487/RFC1081. RFC 1081. Retrieved 2016-10-17. ... the server host starts the POP3 service by listening on TCP port 110. ... /wiki/Marshall_Rose

  130. Myers, John G.; Rose, Marshall T. (May 1996). Post Office Protocol - Version 3. IETF. pp. 3, 19. doi:10.17487/RFC1939. STD 53. RFC 1939. Retrieved 2016-10-17. ... the server host starts the POP3 service by listening on TCP port 110. ... /wiki/Marshall_Rose

  131. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  132. St. Johns, Michael C. (February 1993). "Overview". Identification Protocol. Acknowledgement is given to Dan Bernstein in section 7, "Acknowledgements", page 8. IETF. p. 113. sec. 2. doi:10.17487/RFC1413. RFC 1413. Retrieved 2016-10-17. ... The Identification Protocol (a.k.a., "ident", a.k.a., "the Ident Protocol") ... listens for TCP connections on TCP port 113 (decimal). ... https://datatracker.ietf.org/doc/html/rfc1413#section-2

  133. St. Johns, Michael C. (January 1985). Authentication Server. IETF. p. 1. doi:10.17487/RFC0931. RFC 931. Retrieved 2016-10-17. ... The Authentication Server Protocol provides a means to determine the identity of a user of a particular TCP connection. ... A server listens for TCP connections on TCP port 113 (decimal). ... https://datatracker.ietf.org/doc/html/rfc931#page-1

  134. Lottor, Mark K. (September 1984). Postel, Jon (ed.). Simple File Transfer Protocol. IETF. p. 1. doi:10.17487/RFC0931. RFC 913. Retrieved 2016-10-17. ... SFTP is used by opening a TCP connection to the remote hosts' SFTP port (115 decimal). ... /wiki/Jon_Postel

  135. Assigned Numbers. IETF. doi:10.17487/RFC1340. RFC 1340. Retrieved 2014-05-27. https://datatracker.ietf.org/doc/html/rfc1340

  136. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  137. Kantor, Brian; Lapsley, Phil (February 1986). Network News Transfer Protocol. IETF. pp. 5, 20–23. doi:10.17487/RFC0977. RFC 977. Retrieved 2016-10-17. ... NNTP specifies a protocol for the distribution, inquiry, retrieval, and posting of news articles ... When used via Internet TCP, the contact port assigned for this service is 119. ... /wiki/Brian_Kantor

  138. Feather, Clive D.W. (October 2006). "Reading and Transit Servers". Network News Transfer Protocol (NNTP). Acknowledgements to NNTP Working Group (Russ Allbery, Ned Freed), Brian Kantor, Phil Lapsley et al.) in section 13, "Acknowledgements", pages 107–109. IETF. p. 21. sec. 3.4.1. doi:10.17487/RFC3977. RFC 3977. Retrieved 2016-10-17. ... Network News Transfer Protocol (NNTP) ... is used for the distribution, inquiry, retrieval, and posting of Netnews articles using a reliable stream-based mechanism. ... The official TCP port for the NNTP service is 119. ... https://datatracker.ietf.org/doc/html/rfc3977#section-3.4.1

  139. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  140. "COM Fundamentals – Guide – COM Clients and Servers – Inter-Object Communications – Microsoft RPC". microsoft.com. Retrieved 2014-05-27. http://msdn2.microsoft.com/en-us/library/ms691207(VS.85).aspx

  141. NetBIOS Working Group (March 1987). Protocol standard for a NetBIOS service on a TCP/UDP transport: Concepts and methods. Acknowledgements to Internet Activities Board's End-to-End Services Task Force et al. in section 2, "Acknowledgements", page 6. IETF. doi:10.17487/RFC1001. STD 19. RFC 1001. Retrieved 2016-10-17. https://datatracker.ietf.org/doc/html/rfc1001

  142. NetBIOS Working Group (March 1987). Protocol standard for a NetBIOS service on a TCP/UDP transport: Detailed specifications. Acknowledgements to Internet Activities Board in section 2, "Acknowledgements", page 4. IETF. doi:10.17487/RFC1002. STD 19. RFC 1002. Retrieved 2016-10-17. https://datatracker.ietf.org/doc/html/rfc1002

  143. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  144. NetBIOS Working Group (March 1987). Protocol standard for a NetBIOS service on a TCP/UDP transport: Concepts and methods. Acknowledgements to Internet Activities Board's End-to-End Services Task Force et al. in section 2, "Acknowledgements", page 6. IETF. doi:10.17487/RFC1001. STD 19. RFC 1001. Retrieved 2016-10-17. https://datatracker.ietf.org/doc/html/rfc1001

  145. NetBIOS Working Group (March 1987). Protocol standard for a NetBIOS service on a TCP/UDP transport: Detailed specifications. Acknowledgements to Internet Activities Board in section 2, "Acknowledgements", page 4. IETF. doi:10.17487/RFC1002. STD 19. RFC 1002. Retrieved 2016-10-17. https://datatracker.ietf.org/doc/html/rfc1002

  146. NetBIOS Working Group (March 1987). Protocol standard for a NetBIOS service on a TCP/UDP transport: Concepts and methods. Acknowledgements to Internet Activities Board's End-to-End Services Task Force et al. in section 2, "Acknowledgements", page 6. IETF. doi:10.17487/RFC1001. STD 19. RFC 1001. Retrieved 2016-10-17. https://datatracker.ietf.org/doc/html/rfc1001

  147. NetBIOS Working Group (March 1987). Protocol standard for a NetBIOS service on a TCP/UDP transport: Detailed specifications. Acknowledgements to Internet Activities Board in section 2, "Acknowledgements", page 4. IETF. doi:10.17487/RFC1002. STD 19. RFC 1002. Retrieved 2016-10-17. https://datatracker.ietf.org/doc/html/rfc1002

  148. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

  149. Crispin, Mark R. (March 2003). INTERNET MESSAGE ACCESS PROTOCOL – VERSION 4rev1. IETF. doi:10.17487/RFC3501. RFC 3501. Retrieved 2016-10-17. ... The Internet Message Access Protocol ... allows a client to access and manipulate electronic mail messages on a server. ... The IMAP4rev1 protocol assumes a reliable data stream such as that provided by TCP. When TCP is used, an IMAP4rev1 server listens on port 143. ... /wiki/Mark_Crispin

  150. DeSchon, A.; Braden, R. (August 1988). Background File Transfer Program (BFTP). IETF. pp. 4, 14, 20, 24. doi:10.17487/RFC1068. RFC 1068. Retrieved 2016-10-17. ... The BFTP program ... can be executed as a remotely-accessible service that can be reached via a Telnet connection to the BFTP well-known port (152). ... https://datatracker.ietf.org/doc/html/rfc1068

  151. Davin, J.; Case, J.; Fedor, M.; Schoffstall, M. (November 1987). "The Authentication Protocol". Simple Gateway Monitoring Protocol. IETF. p. 10. sec. 4. doi:10.17487/RFC1028. RFC 1028. Retrieved 2016-10-17. ... This memo defines a simple application-layer protocol by which management information for a gateway may be inspected or altered by logically remote users. ... An authentication protocol entity responds to protocol messages received at UDP port 153 on the host with which it is associated. ... https://datatracker.ietf.org/doc/html/rfc1028#section-4

  152. Lambert, M. (June 1988). PCMAIL: A distributed mail system for personal computers. IETF. p. 8. doi:10.17487/RFC1056. RFC 1056. Retrieved 2016-10-17. ... Pcmail is a distributed mail system providing mail service to an arbitrary number of users ... The TCP contact port for DMSP has been designated 158. ... https://datatracker.ietf.org/doc/html/rfc1056#page-8

  153. Assigned Numbers. IETF. doi:10.17487/RFC1340. RFC 1340. Retrieved 2014-05-27. https://datatracker.ietf.org/doc/html/rfc1340

  154. Assigned Numbers. IETF. doi:10.17487/RFC1340. RFC 1340. Retrieved 2014-05-27. https://datatracker.ietf.org/doc/html/rfc1340

  155. Packard, Keith (2004). X Display Manager Control Protocol (Version 1.1 ed.). The Open Group. Archived from the original on 2016-01-09. Retrieved 2016-10-17. ... The purpose of the X Display Manager Control Protocol (XDMCP) is to provide a uniform mechanism for an autonomous display to request login service from a remote host. ... When XDMCP is implemented on top of the Internet User Datagram Protocol (UDP), port number 177 is to be used. ...[self-published source] /wiki/Keith_Packard

  156. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc4960

  157. Rekhter, Yakov; Li, Tony; Hares, Susan, eds. (January 2006). A Border Gateway Protocol 4 (BGP-4). Acknowledgements to Kirk Lougheed et al. in section 2, "Acknowledgements", pages 6–7. IETF. pp. 8, 47–48, 51–52. doi:10.17487/RFC4271. RFC 4271. Retrieved 2016-10-17. ... BGP listens on TCP port 179. ... https://datatracker.ietf.org/doc/html/rfc4271

  158. Hartmann, Hartmann (August 2014). Default Port for Internet Relay Chat (IRC) via TLS/SSL. IETF. p. 2. doi:10.17487/RFC7194. RFC 7194. Retrieved 2016-10-06. ... Although system port assignments exist for IRC traffic that is plain text (TCP/UDP port 194) or TLS/SSL encrypted (TCP/UDP port 994), it is common practice amongst IRC networks not to use them for reasons of convenience and general availability on systems where no root access is granted or desired. ... https://datatracker.ietf.org/doc/html/rfc7194#page-2

  159. SNMP MUX Protocol and MIB. IETF. May 1991. p. 8. doi:10.17487/RFC1227. RFC 1227. Retrieved 2019-10-15. When using the TCP to provide the transport-backing for the SMUX protocol, the SNMP agent listens on TCP port 199. https://datatracker.ietf.org/doc/html/rfc1227#page-8

  160. Bernstein, Daniel B. "Quick Mail Transfer Protocol (QMTP)". Retrieved 2018-04-18. ... A QMTP client connects to a QMTP server, as discussed in section 7, over a reliable stream protocol allowing transmission of 8-bit bytes. ... QMTP may be used on top of TCP. A QMTP-over-TCP server listens for TCP connections on port 209. ...[self-published source] /wiki/Daniel_J._Bernstein

  161. "The Spartan Protocol Specification". 2021-03-24. Retrieved 2023-08-30. ... The default port for spartan URLs is 300, in reference to Battle of Thermopylae when 300 spartan soldiers stood ground against an invading Persian army. ... http://portal.mozz.us/spartan/spartan.mozz.us/specification.gmi#5-urls

  162. "TCP and UDP ports used by Apple software products". Support. Apple (published 2021-06-14). 2014-11-08. Archived from the original on 2021-10-15. Retrieved 2021-10-19. https://support.apple.com/en-us/HT202944

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  172. Stewart, Randall R., ed. (September 2007). Stream Control Transmission Protocol. IETF. pp. 135–136. doi:10.17487/RFC4960. RFC 4960. Retrieved 2016-09-27. https://datatracker.ietf.org/doc/html/rfc4960

  173. Fielding, Roy T.; Reschke, Julian F., eds. (June 2014). Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing. IETF. pp. 11, 17, 19, 42–43, 50. doi:10.17487/RFC7230. RFC 7230. Retrieved 2016-10-16. /wiki/Roy_Fielding

  174. Belshe, Mike; Peon, Roberto (May 2015). "Starting HTTP/2". In Thomson, Martin (ed.). Hypertext Transfer Protocol Version 2 (HTTP/2). IETF. p. 7. sec. 3. doi:10.17487/RFC7540. RFC 7540. Retrieved 2016-10-16. ... HTTP/2 uses the same "http" and "https" URI schemes used by HTTP/1.1. HTTP/2 shares the same default port numbers: 80 for "http" URIs and 443 for "https" URIs. ... /wiki/Mike_Belshe

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  179. TCP port 465 was originally assigned to allow the use of SMTP over SSL (SMTPS), but practical concerns meant that it was left unused and according to the registration rules at that time was subsequently revoked and eventually re-assigned for use by Cisco's URD protocol. Subsequently, port 587 was assigned as the SMTP submission port, but was initially in plaintext, with encryption eventually provided years later by the STARTTLS extension. At the same time, the subsequent adoption of the usage of 465 as an SSL-enabled SMTP submission port, even though the original registration did not envision that usage and despite the fact that it was registered to another service has endured. Subsequently, RFC 8314, in a special exemption to the normal assignment process as defined by RFC 6335, acknowledges the de-facto situation and not only designates message submission over implicit TLS as an 'alternate usage assignment' but establishes this as the preferred method and calls for transition away from port 587 and STARTTLS. /wiki/Simple_Mail_Transfer_Protocol

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  181. Moore, Keith; Newman, Chris (January 2018). Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access. Internet Engineering Task Force. pp. 18–19. doi:10.17487/RFC8314. RFC 8314. In brief, this memo now recommends that:... Connections to Mail Submission Servers... be made using 'Implicit TLS' [on port 465]... in preference to connecting to the 'cleartext' port [587] and negotiating TLS using the STARTTLS command.... https://www.rfc-editor.org/rfc/rfc8314.html

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  185. Assigned Numbers. IETF. doi:10.17487/RFC1340. RFC 1340. Retrieved 2014-05-27. https://datatracker.ietf.org/doc/html/rfc1340

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  193. Moore, Keith; Newman, Chris (January 2018). Cleartext Considered Obsolete: Use of Transport Layer Security (TLS) for Email Submission and Access. Internet Engineering Task Force. pp. 18–19. doi:10.17487/RFC8314. RFC 8314. In brief, this memo now recommends that:... Connections to Mail Submission Servers... be made using 'Implicit TLS' [on port 465]... in preference to connecting to the 'cleartext' port [587] and negotiating TLS using the STARTTLS command.... https://www.rfc-editor.org/rfc/rfc8314.html

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