Linux Firewalls
Michael Rash
Cross-Site Scripting Attacks: Classification, Attack, and Countermeasures
B. B. Gupta and Pooja Chaudhary
How Linux Works, 3rd Edition
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C++ Crash Course
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Про криптографию
Виктор де Касто
Wireless Network Simulation
Henry Zárate Ceballos & Jorge Ernesto Parra Amaris & Hernan Jiménez Jiménez & Diego Alexis Romero Rincón & Oscar Agudelo Rojas & Jorge Eduardo Ortiz Triviño
Asterisk: The Definitive Guide
Jim Van Meggelen & Russell Bryant & Leif Madsen