This is actually standard practice, it is very easy and common for
administrators to configure their firewalls to redirect all 53 tcp/udp
requests to a specific host to prevent those people and/or malicious
applications which may be smart enough to change their dns server
settings in an attempt to bypass a dns based filtering solution.
A solution to your problem would seem obvious to some but, I think that
you may consider redirecting all requests to udp/tcp 53 from the host
running Squid to your intended destination port using firewall
rules.ssentially, you use a firewall to forward requests destined for
port 53 to whatever port you want. ( yes you can do this without
forwarding to a specific host )
I hope that helps.
--
Signed,
Benjamin E. Nichols
Founder & Chief Architect
1-(405)-301-9516
http://www.squidblacklist.org
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