Mailinglist Archive

Data Driven Attacks Using HTTP Tunneling 
by Ido Dubrawsky
last updated August 2, 2004

As more traffic across the Internet is coming under scrutiny and network
administrators are making efforts to limit the traffic in and out of
their networks, the one port that no one is willing to block en-masse is
port 80. Users (and administrators) browse the web constantly, whether
it is for work purposes or not.

http://www.securityfocus.com/infocus/1793