North American Network Operators Group|
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Re: How do you stop outgoing spam?
> 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