Is there any good books for "LEARNING" the ins and outs of cfging PIXs ? I have my CCNA and understand the concepts of routing, filtering port forwarding etc. I have PIX 501 and am trying to learn enough to handle at least simple cfgs. Using PDM 3.0 and 6.3 I can get a outgoing traffic going, I can get both PIX to PIX vpn and Cisco Client to PIX vpn working, but all thru PDM. I need to do more like port forwarding and things like access-lists. Things that are "SIMPLE" on other brands aren't that easy with PIXs. What I'm looking for is not a cmd reference but something that explains concepts and how things work together. I've been in the computer industry for over 20 years mostly on IBM midrange CPUs and devices. Where all I ever I've had to do is set the IP info etc on devices, the network guys did all the other stuff. I want something above the CISCO PIX for Dummies level, but below the just a cmd reference.