Absolute FreeBSD
Michael Warren Lucas
Ethical Hacking
Elijah Lewis
Wireless Network Simulation
Henry Zárate Ceballos & Jorge Ernesto Parra Amaris & Hernan Jiménez Jiménez & Diego Alexis Romero Rincón & Oscar Agudelo Rojas & Jorge Eduardo Ortiz Triviño
Iptables Tutorial 1.2.2
Oskar Andreasson
Cloud Attack Vectors
Morey J. Haber & Brian Chappell & Christopher Hills
A Complete Guide to Burp Suite
Sagar Rahalkar
Electronics for Beginners
Jonathan Bartlett
Linux Containers and Virtualization
Shashank Mohan Jain
Practical Ansible
Vincent Sesto
Practical LXC and LXD
Senthil Kumaran S.
Quick Start Guide to Penetration Testing
Wireshark Fundamentals
Vinit Jain