K 10 svn:author V 3 bhd K 8 svn:date V 27 2016-05-27T16:46:54.263228Z K 7 svn:log V 161 Revise the firewall chapter. Start with "Einführung/Konzepte". More commits to come. Reviewed by: bcr Differential Revision: https://reviews.freebsd.org/D6583 END