PF (Packet Filter) firewall package based on dynamic configuration (stateful rules)
ON DYNAMIC CONFIGURATION (Stateful Rules) PF (Packet Filter) is the packet filter or firewall configuration based on dynamic (stateful rules) written by Darren OpenBSD. It replaced the filter in OpenBSD Darren Reed IPFilter due to problems with the license, namely that Reed had to give permission to the OpenBSD developers to change the code. Theo de Raadt said when IPFilter was removed "the software that OpenBSD uses and shares should be free for all (both users and companies), for any purpose you want to be given, including their modification, use, piss on it or even join babies in crushing machines or atomic bombs to drop in Australia. " Due to the discomfort of the OpenBSD team is licensed by Reed, it was decided to replace the entire package rather than lose more time trying to negotiate the issue. The PF has since developed very rapidly, and in OpenBSD 3.8 and have much advantage over other firewall options. Filtering syntax is very similar to IPFilt...