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Re: How do you stop outgoing spam?


From: alex () yuriev com
Date: Tue, 10 Sep 2002 09:39:31 -0400 (EDT)


If somebody is ignorant enough to implement IP over HTTP, why should
they be accommodated? There are numerous reasons why there are other 
port numbers to TCP than 80 and other protocol numbers to IP than 6.

Unlike some people that immediately jump to conclusions, that someone may be
not arrogant, but bright - using port TCP 80 is an excellent way to bypass
firewalls. If your firewall performs content analysis, one can simply encode
the data in valid HTML code.

Alex


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