These slides live at http://home.nuug.no/~peter/hailmary2013/, with a zipped version including all data at http://home.nuug.no/~peter/hailmary2013.zip (approx. 26MB) for your convenience.
The blog posts (field notes), data links within:
Peter N. M. Hansteen, (2008-12-02) A low intensity, distributed bruteforce attempt (slashdotted)
Peter N. M. Hansteen, (2008-12-06) A Small Update About The Slow Brutes
Peter N. M. Hansteen, (2008-12-21) Into a new year, slowly pounding the gates (slashdotted)
Peter N. M. Hansteen, (2009-01-22) The slow brutes, a final roundup
Peter N. M. Hansteen, (2009-04-12) The slow brute zombies are back (slashdotted)
Peter N. M. Hansteen, (2009-10-04) A Third Time, Uncharmed (slashdotted)
Peter N. M. Hansteen, (2009-11-15) Rickrolled? Get Ready for the Hail Mary Cloud! (slashdotted)
Peter N. M. Hansteen, (2011-10-23) You're Doing It Wrong, Or, The Return Of The Son Of The Hail Mary Cloud
Peter N. M. Hansteen, (2011-10-29) You're Doing It Wrong, Returning Scoundrels
Peter N. M. Hansteen, (2012-04-06) If We Go One Attempt Every Ten Seconds, We're Under The Radar (slashdotted)
Peter N. M. Hansteen, (2012-04-11) Why Not Use Port Knocking?
Peter N. M. Hansteen, (2013-02-16) There's No Protection In High Ports Anymore. If Indeed There Ever Was. (slashdotted)
Other Useful Texts
Marcus Ranum: The Six Dumbest Ideas in Computer Security, September 1, 2005
Michael W. Lucas: SSH Mastery, Tilted Windmill Press 2013 (order direct from OpenBSD bookstore here)
Michael W. Lucas: Absolute OpenBSD, 2nd edition No Starch Press 2013 (order direct from OpenBSD bookstore here)
Peter N. M. Hansteen, The Book of PF, 2nd edition, No Starch Press 2010 (order direct from OpenBSD bookstore here), 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.