A Firewall is the first line of defense for almost every LAN connected to the Internet. Using a Firewall many System Administrators restrict privileges to services they do not want to allow access to such as telnet and ftp. Using tunneling software, people can re-enable those services by establishing virtual data paths through allowed protocols such as http.
The talk will provide an overview of how tunneling may be used, how to combat it, and when to use it. There will be a demonstration of how tunneling works using the httptunnel http://www.nocrew.org/software/httptunnel.html software.