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                            TCP/IP over SMTP … RFC?
                                        
Via Flutterby [1] this wonderful page about tunnelling TCP/IP over SMTP. [2]

Yes, you read right—a way to tunnel TCP/IP over the SMTP protocol, which
itself runs over TCP/IP. The author of the page states that this is for
firewalls so restrictive that only email passes through. Issues of latency
aside, is seems so … convoluted … to do such a thing.

But remember—the Internet sees censorship as damage and routes around it.
Often times in ways people don't expect.

[1] http://www.flutterby.com/
[2] http://detached.net/mailtunnel/desc.html

Email Sean Conner at sean@conman.org

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