Dnscat is awesome!

[iago]

If you follow me on twitter, you've seen links to my blog posts about Dnscat, a tool I've been working on weaponizing (which is a word I love :) ).

Basically, it creates a tunnel over the DNS protocol, from anywhere to your DNS server. It will work recursively, which means as long as your server can talk to *any* DNS server, whether the DNS server belongs to your company, ISP, etc, it will eventually get the message to *my* DNS server. It's a cool way to poke through firewalls. :)