David Zientara is a software engineer living in northern New Jersey. He has over 20 years of experience in IT. In the mid-1990s, David became the lead software engineer for Oxberry LLC, a digital imaging company headquartered in New Jersey. In this capacity, he played a major role in developing a new software package for the company's equipment. In the mid-2000s, David took an interest in computer networking, an interest that led him to learn about m0n0wall and, eventually, pfSense.
David currently is employed with the Prasad Corporation in a consulting position and is also the author of Learn pfSense 2.4 and Mastering pfSense 2.4, also available from Packt Publishing.
I want to thank my parents, especially my father, for fueling my initial interest in computers and technology, and my mother, for providing constant encouragement.
Shiva V. N. Parasram is the director of the Computer Forensics and Security Institute and is a cyber security trainer, pentester, and forensic investigator with 14 years of experience in the field. His qualifications include an MSc in network security (distinction), CCISO, CEH, CHFI, and CCNA. As a Certified EC-Council Instructor (CEI), he has also trained several-hundred people in ethical hacking and forensics, and has recently been selected as the sole trainer for cyber security courses for staff at Fujitsu Trinidad. He is also the author of Digital Forensics with Kali Linux, published by Packt Publishing.
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