ipfw vs. ipf on a freebsd router

Joe js.lists at gmail.com
Wed Oct 18 15:19:27 UTC 2006

John Levine wrote:
> I'm putting together a freebsd router to sit between my LAN and a T1.
> The current router (still running BSD/OS) uses BSDI's ipfw, but that
> died when BSDI did.  It's about as simple a routing job as one could
> ask, a T1 with a static address to a LAN with a static /24.
> I have a whole bunch of packet filtering rules on the current router
> to keep out nasty stuff based partly on port numbers but also a couple
> of hundred IP ranges from the SBL and elsewhere.  I have enough IP
> addresses that I do not need to NAT.
> What are the relative merits of freebsd's ipf and ipfw?  It looks like
> either can do the filtering I need to do.  Any reason to choose one
> over the other?
Take a look at PF. It was developed by OpenBSD and ported to FreeBSD.

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