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OpenBSD Packet Filter Ported To NetBSD, FreeBSD

Posted by timothy on from the undetectable-natting dept.

honold writes "just read this on deadly.org (from Pyun YongHyeon): "Hello there. I have ported pf to FreeBSD 5.0 Currently it works well, though many nice features of pf not tested. I have ported to make FreeBSD users know there is an another excellent stateful packet filter with BSD license. URL is the following. ftp://ftp.kr.freebsd.org/pub/FreeBSD-kr/misc/pf_fr eebsd_0.3.tar.bz2 Thanks." netbsd has a port as well Where are you, Linux?"

1 of 48 comments (clear)

  1. Re:Question by overbom · · Score: 3, Informative

    Yes, they differ in implementation and configurability. FreeBSD's default firewall, ipfw, is pretty easy to set up and configure, and it's pretty powerful. Darren Reed's ipfilter is arcane to set up and insanely powerful. From what I've heard of obsd's pf is that it's pretty easy to set up and insanely powerful.

    Most firewalls more or less do the same thing, but the devil is in the details. Some firewalls can do much more than others can, and that's why there are multiple firewalls available. For example, Darren Reed's ipfilter can process packets based on any of the TCP flags in the packet header -- not an option that an entry-level sysadmin wants to have to worry about, although a security expert might be uncomfortable without it.

    Most of the firewalls can be set up to do host-based and network-based packet filtering (that's firewalling).

    Hope this helps.