References (cont'd)

Other Useful Texts

Marcus Ranum: The Six Dumbest Ideas in Computer Security, September 1, 2005

Michael W. Lucas: SSH Mastery, Tilted Windmill Press 2013

Michael W. Lucas: Absolute OpenBSD, 2nd edition No Starch Press 2013

Peter N. M. Hansteen, The Book of PF, 3rd edition, No Starch Press 2013, also the online PF tutorial it grew out of, several formats http://home.nuug.no/~peter/pf/ , more extensive slides at http://home.nuug.no/~peter/pf/newest/

OpenBSDs web http://www.openbsd.org/ -- lots of useful information.