On Tue, 29 Nov 2011 09:02:46 +0000, Invisible wrote:

>>> And you're seriously saying that somebody would go to all that
>>> trouble,
>>> and then allow arbitrary Internet traffic so long as it's on TCP port
>>> 80?
>>
>> Yep, lots of businesses do that.
> 
> That's kind of bizarre, don't you think?

Not really, identifying what the traffic actually is requires a fair bit 
of work.

>> When I was traveling to teach, I would often (after getting approval
>> from the client) tunnel through HTTP to get ssh and (primarily) e-mail
>> connections to my corporate servers.
> 
> I can see how it would be pretty trivial to just run SSH over TCP port
> 80. But I don't see how you can tunnel SSH over HTTP...

Go have a look at the program 'httptunnel'.  You do need a listener on 
the outside.

Jim

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