# [Absolute OpenBSD](/https://nostarch.com/obenbsd2e) ISBN-10: 1593274769 ISBN-13: 978-1-59327-476-4

# [Book of PF](/https://nostarch.com/pf3) ISBN-10: 1-59327-589-7 ISBN-13: 978-1-59327-589-1

# [Httpd and Relayd Mastery](/https://mwl.io/nonfiction/tools#relayd) ISBN-10: 1-54675-206-4 ISBN-13: 978-1-54675-206-6

# [SSH Mastery](/https://www.tiltedwindmillpress.com/product/ssh-mastery-2nd-edition/) ISBN-10: 1642350028 ISBN-13: 978-1642350029

 Secure Architectures with OpenBSD

    by Brandon Palmer, Jose Nazario. 

    ISBN 03-21193-66-0 

    April 2004, 520 pp.

 The Design and Implementation of the 4.4BSD Operating System

    by Marshal Kirk McKusick, Keith Bostic, Michael J. Karels, John S. Quarterman 

    ISBN-10: 0132317923 

    ISBN-13: 978-0132317924 

Advanced Programming in the Unix Environment (3rd Edition)

    by W. Richard Stevens, Stephen A. Rago 

The C Programming Language

    by Brian W. Kernighan and Dennis M. Ritchie 

DNSSEC Mastery

    by Michael W. Lucas 

    ISBN-13: 978-1484924471 

    ISBN-10: 1484924479 

    May 2013, 130 pp. 

    Securing the Domain Name System with BIND 

TCP/IP Illustrated, Volume 1

    by W. Richard Stevens 

IPsec: The New Security Standard for the Internet, Intranets and Virtual Private Networks

    by Naganand Doraswamy and Dan Harkins 

Computer Networks

    by Andy Tanenbaum 

DNS and BIND

    by Paul Albitz and Cricket Liu 

DHCP

    by Ted Lemon and Ralph E. Droms