Network Security: A Practical Approach
Jan L. Harrington
Jenkins: The Definitive Guide
John Ferguson Smart
OpenStack Operations Guide
Tom Fifield & Lorin Hochstein & Jonathan Proulx & Everett Toews & Diane Fleming & Joe Topjian & Anne Gentle
Hacking VoIP: Protocols, Attacks, and Countermeasures
Himanshu Dwivedi
NGINX High Performance
Rahul Sharma