Return of the Shadow
J. R. R. Tolkien
Ruby Under a Microscope: An Illustrated Guide to Ruby Internals
Pat Shaughnessy
Hacking VoIP: Protocols, Attacks, and Countermeasures
Himanshu Dwivedi
Advanced Programming in the UNIX Environment
W. Richard Stevens & Stephen A. Rago
The Book of PF: A No-Nonsense Guide to the OpenBSD Firewall
Peter N. M. Hansteen
IPv6 Essentials
Silvia Hagen