If you have enjoyed this book or found it useful, please go to the OpenBSD.org Ordering page at http://www.openbsd.org/orders.html and buy CD sets, or for that matter, support further development work by the OpenBSD project via a donation, such as via the Donations page at http://www.openbsd.org/donations.html.

If you are the kind of corporate entity that is more comfortable with donating to a corporation, you can contact the OpenBSD foundation, a Canadian nonprofit corporation created in 2007 for that specific purpose. See the OpenBSD Foundation website at http://www.openbsdfoundation.org/ for more information.

If you’ve found this book at a conference, there might even be an OpenBSD booth nearby where you can buy CDs, T-shirts, and other items.

Remember that even free software takes real work and real money to develop and maintain.