Linux на примерах. Практика, практика и только практика
Колисниченко Д.Н.
Cloud Attack Vectors
Morey J. Haber & Brian Chappell & Christopher Hills
Linux Networking Cookbook
Carla Schroder
Pluggable Authentication Modules
Kenneth Geisshirt
SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys
Michael W Lucas