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Date: Tue, 31 May 2005 19:51:41 +0200
From: Ivan Voras <ivoras@fer.hr>
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To: bruce@nikkel.com
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Cc: stable@freebsd.org
Subject: Re: IP Firewalling by DNS name
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bruce@nikkel.com wrote:

> Access control based on the reverse lookup of an IP address is a
> dangerous idea in general. Anyone who manages their own reverse DNS
> could bypass the security simply by creating a DNS entry. If someone
> controls the in-addr.arpa zone for a particular IP range, they can make
> those IPs resolve with any FQDN they want, even with domains they don't
> own.

Interesting! Thanks!