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NPF (firewall)
open-in-new
<ul> <li>Free and open-source software portal</li></ul> <p>NPF is a <a href="/facts/BSD_license/XLtmLp5x">BSD licensed</a> stateful <a href="/facts/Packet_filter/Et2RkJaU">packet filter</a>, a central piece of software for <a href="/facts/Firewall_(computing)/Et2RkJaU">firewalling</a>. It is comparable to <a href="/facts/Iptables/MHGwCkwR">iptables</a>, <a href="/facts/Ipfirewall/dB0nV6we">ipfw</a>, <a href="/facts/Ipfilter/oCh1c89B">ipfilter</a> and <a href="/facts/PF_(firewall)/pc1fgj4Y">PF</a>. NPF is developed on <a href="/facts/NetBSD/PTm5HWls">NetBSD</a>. </p>