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ipfirewall or ipfw is a FreeBSD IP, stateful firewall, [1] packet filter and traffic accounting facility. Its ruleset logic is similar to many other packet filters except IPFilter . ipfw is authored and maintained by FreeBSD volunteer staff members.
IPFire is a hardened [3] open source Linux distribution that primarily performs as a router and a firewall; a standalone firewall system with a web-based management console for configuration.
Can Target: Changing default policy to accept/reject (by issuing a single rule) IP destination address(es) IP source address(es) TCP/UDP destination port(s)
The term firewall originally referred to a wall intended to confine a fire within a line of adjacent buildings. [4] Later uses refer to similar structures, such as the metal sheet separating the engine compartment of a vehicle or aircraft from the passenger compartment.
Name Status Type Architecture Min hardware requirements License Cost Description Alpine Linux: Active: Linux distribution: x86, x86-64, ARM: Open source: Free: Linux distribution running from a RAM drive.
Linux IP Firewalling Chains, normally called ipchains, is free software to control the packet filter or firewall capabilities in the 2.2 series of Linux kernels.It superseded ipfirewall (managed by ipfwadm command), but was replaced by iptables in the 2.4 series.
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.
IPFilter (commonly referred to as ipf) is an open-source software package that provides firewall services and network address translation (NAT) for many Unix-like operating systems.