nice set, it has some good classics...
~ Not until I read "Hack The Stack - Using Snort And Ethereal To Master The 8 Layers Of An Insecure Network (2006)" I realized cryptography was a big deal ( my previous theories just lead me to believe that any crypt that wasn't gibberish could be bruted in a simple matter). The book goes over IP & flaws in relative depth hence hack the stack.
I went to the link but it seems dead so i just ran a search in iso hunt for the code breakers and came up with this http://isohunt.com/torrent_details/40049737/the+codebreakers?tab=summary
it has it and a ton more reading that might be useful!
oh and cryptool rocks thanks for the tip "dotmaster"