My Out of Control Network post has generated a lot of discussion on the Security Catalysts forums. The reason I'm telling you this is to point you to a resource that will give you lots of useful information and advice. These information security and IT pros took my few comments on documenting your network and expanded it into a firestorm of advice for what to document to ensure that your network is a fine tuned machine. At least from a documentation point of view. Check it and the rest of the useful information out.