NGINX Cookbook
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Asterisk: The Definitive Guide
Jim Van Meggelen & Russell Bryant & Leif Madsen
Command Line Kung Fu: Bash Scripting Tricks, Linux Shell Programming ...
Jason Cannon
SSH Mastery: OpenSSH, PuTTY, Tunnels and Keys
Michael W Lucas
Cross-Site Scripting Attacks: Classification, Attack, and Countermeasures
B. B. Gupta and Pooja Chaudhary
The Cybersecurity Self-Help Guide
ARUN. SONI