Donald A. Tevault—but you can call him Donnie—got involved with Linux way back in 2006, and has been working with it ever since. He holds the Linux Professional Institute Level 3—Security certification, and the GIAC Incident Handler certification. Donnie is a professional Linux trainer, and thanks to the magic of the internet, teaches Linux classes literally the world over from the comfort of his living room.
First, I'd like to thank the good folk at Packt, who were most delightful to work with on this project. I'd also like to thank my cats, who so graciously allowed me to use their names in the demos.
Salman Aftab has 10+ years of experience in Linux and 7+ years of experience in networks and security. He authored the book Linux Security and Unified Threat Management System.
Salman is an owner of the Linux Zero To Hero project, where he teaches Linux from very basic to advanced level free of cost. He is skilled in Linux, AWS, Networks and Security, and VOIP. He is RHCE trained and holds NCLA, SCNS, CEH, 3 X CCNA, CCNA Security, CCNA Voice, CCNP Security, CCNP, and OSCP is in progress.
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