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From: dksaarth at unix.za.net (Richard Spiers)
Subject: Proxies

----- Original Message ----- 
From: "Ben Nelson" <venom@...om600.org>
To: "Earl Keyser" <Earl.Keyser@...zata.k12.mn.us>
Cc: <full-disclosure@...ts.netsys.com>
Sent: Friday, October 31, 2003 8:06 PM
Subject: Re: [Full-Disclosure] Proxies

> only understands HTTP (to prevent other services from being tunneled
> over port 80), you should be good to go.

That isn't going to stop other services from being tunneled over port 80.
There quite a few ways to do this. See Firepass. It is a tunneling tool,
allowing one to bypass firewall restrictions and encapsulate data flows
inside legal ones that use HTTP POST requests. TCP or UDP based protocols
may be tunneled with Firepass

http://www.gray-world.net/pr_firepass.shtml

and no, I don't work for them, I don't know them, and I have no commercial
interest in advertising this freeware product ;p View it as proof of concept
;p

What exactly are you trying to stop these students from doing? Is there a
problem with them visiting certain sites, or using certain services or
bandwith restricitions etc?

Thanks
Richard Spiers