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Date: Mon, 30 Nov 2015 16:48:49 +0530
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Subject: Set a deny rule for a URL in IPFW by its domain name
From: Kulamani Sethi <kulamani.sethi@gmail.com>
To: freebsd-ipfw@freebsd.org
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Hi all,
   I am using ipfw3, can i block a URL by its domain name? When i am
setting rules in IPFW by its domain name, it simple set rule by its
corresponding IP.
Here example how i set

C:>ipfw add 1002 deny log ip  from www.google.com to any

As i know most of the websites uses dynamic IP, it simple changes there IP
periodically. This rule i set for google is worked for few moment, then it
allow the packets to my terminal.