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Date: Thu, 17 Jun 2010 22:47:21 +0200
From: Bernt Hansson <bernt@bah.homeip.net>
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To: Valerian Galeru <valerian_ro@yahoo.com>
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Cc: freebsd-questions@freebsd.org
Subject: Re: FreeBSD router (IPFW-based): how to block an URL (all IPs of
 an	A-like HOSTNAME)
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Valerian Galeru said the following on 2010-06-17 22:01:
> Hello,
> 
> Does anyone have any ideas how to block all requests using an IPFW-based router
 > (FreeBSD 6.4) to and from a HOSTNAME (which has more DNS A entries) 
or better, from any *.HOSTNAME.COM ????

Do a whois hostname.com taking note of their ip-address range. Then, for 
ipf, put this in your rules file.

### EXAMPLE ###

block in quick on fxp0 from 192.168.0.0/16 to any
block out quick on fxp0 from any to 192.168.0.0/16