After trying some more code on a firewall’d box, it’s obvious that the generic metasploit payloads aren’t very useful in most situations. It would be interesting to see something a bit more “real” in the framework. I wonder if anyone has taken any of the payloads out of Phrack and put them into metasploit…

This (http://freeworld.thc.org/papers/fw-backd.htm) article mentions a number of ways in which to get back out of a machine, through a firewall, without a lot of hindrance…