PF (firewall)
| PF | |
|---|---|
| Original author(s) | Daniel Hartmeier | 
| Developer(s) | The OpenBSD Project | 
| Initial release | 1 December 2001 | 
| Repository | |
| Written in | C | 
| Operating system | OpenBSD | 
| Type | Packet filtering | 
| License | BSD license | 
| Website | www | 
PF (Packet Filter, also written pf) is a BSD licensed stateful packet filter, a central piece of software for firewalling. It is comparable to netfilter (iptables), ipfw, and ipfilter.
PF was developed for OpenBSD, but has been ported to many other operating systems.