local port 512 connects in logfiles & ipsec-client-question

[albi at scii.nl]

1)
on a mailserver with FreeBSD and a couple of jails, i've put the line
biff = no 
in every main.cf from postfix
still i see local 512-attempts in the logfiles, how does one get rid of
these biff-messages attempts completely ?
(i do like log_in_vain="YES" btw)

2)
i've successfully set up ipsec over 2 m0n0wall-firewalls
(FreeBSD-based firewall http://www.m0n0.ch/wall ) from one
(linux) lan-machine to another "remote" (linux) lan-machine

i now wonder whether someone has good (preferably
easy & GUI-based) recommendations for ipsec-clients *that work well with
ipsec on FreeBSD* for linux-, windows- and apple-machines for my users
so that they can easily access their files from homes

TIA