Absolute OpenBSD ISBN-10: 1593274769 ISBN-13: 978-1-59327-476-4

Book of PF ISBN-10: 1-59327-589-7 ISBN-13: 978-1-59327-589-1

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