Buffer Overflow Attacks: Detect, Exploit, Prevent
Vitaly Osipov
Building DMZs for Enterprise Networks
Robert J. Shimonski & Will Schmied & V Chang & Thomas W. Shinder
How Linux Works: What Every Superuser Should Know
Brian Ward
Networking for Systems Administrators (IT Mastery) (Volume 5)
Michael W Lucas
Mostly Harmless
Douglas Adams
The Hitchhiker's Guide to the Galaxy (5)