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pfSense is a firewall/router computer software distribution based on FreeBSD. The open source pfSense Community Edition (CE) and pfSense Plus is installed on a physical computer or a virtual machine to make a dedicated firewall/router for a network. [ 3 ]
pfSense: Apache 2.0 / Proprietary (Plus) Free / Paid FreeBSD-based appliance firewall distribution ... Yes (manual setup needed) Both Linux (based on Linux From Scratch)
PF was originally designed as replacement for Darren Reed's IPFilter, from which it derives much of its rule syntax.IPFilter was removed from OpenBSD's CVS tree on 30 May 2001 due to OpenBSD developers' concerns with its license.
Launched in 2015, [2] it is a fork of pfSense, which in turn was forked from m0n0wall built on FreeBSD. [3] When m0n0wall closed down in February 2015 its creator, Manuel Kasper, referred its developer community to OPNsense. [4]
GEOM is the main storage framework for the FreeBSD operating system.It is available in FreeBSD 5.0 and later releases, and provides a standardized way to access storage layers.
NPF is designed for high performance on SMP systems and for easy extensibility. It supports various forms of Network Address Translation (NAT), stateful packet inspection, tree and hash tables for IP sets, bytecode (BPF or n-code) for custom filter rules and other features.
The WireGuard package for pfSense incorporates the ongoing kernel-mode WireGuard development work by Jason A. Donenfeld that was originally sponsored by Netgate. [43] [40] [44] In June 2021, the official package repositories for both pfSense CE 2.5.2 and pfSense Plus 21.05 included the WireGuard package. [45]
Port Control Protocol (PCP) is a computer networking protocol that allows hosts on IPv4 or IPv6 networks to control how the incoming IPv4 or IPv6 packets are translated and forwarded by an upstream router that performs network address translation (NAT) or packet filtering.