NAME
pfc - active precompiled filters generator
SYNOPSIS
pfc <expression> >/etc/ppp/your.active.filter
DESCRIPTION
This manual page documents briefly the pfc command.
pfc is the Precompiled Filter Compiler - a tool to generate "active
precompiled filters". If your pppd supports this feature, you can use
this utility to generate the filter files. The Active Filter allows a
connect on demand pppd to determine what is ’interesting’ traffic, and
then initiate the PPP session. The tool allows you to create the
filters, in libpcap format, for use by pppd. Common filters are used
to ignore traffic (ie: ntp, various protocol keepalives, etc...) so PPP
sessions are not initiated until ’real’ traffic requires them.
Note that the generated compiled filter expression is specific to
point-to-point links, and differs from the format generated by tcpdump
-ddd.
(specify precompiled-active-filter=/etc/ppp/your.active.filter in the
ppp options file)
EXAMPLE
/usr/bin/pfc ntp and ldap > /etc/ppp/your.active.filter
SEE ALSO
pfc is from the FLoppy Isdn 4 Linux project - see
http://www.fli4l.de/en/home/news/
AUTHOR
This manual page was written by Roberto C. Sanchez
<roberto@connexer.com>, for the Debian project (but may be used by
others).
October 30, 2008