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Command: npf | Section: 7 | Source: NetBSD | File: npf.7
NPF(7) FreeBSD Miscellaneous Information Manual NPF(7)
NAME
NPF - NetBSD packet filter
DESCRIPTION
NPF is a layer 3 packet filter, supporting IPv4 and IPv6 as well as layer
4 protocols such as TCP, UDP, and ICMP. It was designed with a focus on
high performance, scalability, and modularity.
FEATURES
NPF offers the traditional set of features provided by packet filters.
Some key features are:
o Stateful inspection (connection tracking).
o Network address translation (NAT). This includes static
(stateless) and dynamic (stateful) translation, port
translation, bi-directional NAT, etc.
o IPv6-to-IPv6 network prefix translation (NPTv6).
o Tables for efficient IP sets.
o Application Level Gateways (e.g., to support traceroute).
o Use of BPF with just-in-time (JIT) compilation.
o Rule procedures and a framework for NPF extensions.
o Traffic normalisation (extension).
o Packet logging (extension).
For a full set of features and their description, see the NPF
documentation website and other manual pages.
SEE ALSO
libnpf(3), bpf(4), bpfjit(4), npf.conf(5), npf-params(7), pcap-filter(7),
npfctl(8), npfd(8)
NPF project page: https://github.com/rmind/npf/
NPF documentation website: http://rmind.github.io/npf/
HISTORY
NPF was written from scratch in 2009 and is distributed under the
2-clause BSD license. It first appeared in NetBSD 6.0.
AUTHORS
NPF was designed and implemented by Mindaugas Rasiukevicius.
FreeBSD 14.1-RELEASE-p8 August 11, 2019 FreeBSD 14.1-RELEASE-p8