A PF touch-up of the FreeBSD Handbook firewalls chapter

[Peter N. M. Hansteen]

My first stab at putting some further useful info about PF into the
FreeBSD Handbook's firewalls chapter is available in patch form
(result of diff -u) at

http://www.bsdly.net/~peter/freebsd/fw.diff

Apply with 

'cd /usr/doc/en_US.ISO8859-1/books/handbook/firewalls ; patch <fw.diff' 

and build your favorite presentation format.

Some of you will see immediately where most of the material comes from
(an url is in the patch even).  I consider this to be not quite ready
for submission as a doc PR, and I'm very interested in feedback.  So
please let me hear what you think.  I'm all ears at this point.

Cheers,
-- 
Peter N. M. Hansteen, member of the first RFC 1149 implementation team
http://www.blug.linux.no/rfc1149/ http://www.datadok.no/ http://www.nuug.no/
"First, we kill all the spammers" The Usenet Bard, "Twice-forwarded tales"
20:11:56 delilah spamd[26905]: 146.151.48.74: disconnected after 36099 seconds