IPFW(4)

NAME

     ipfw -- IP packet filter and traffic accounting

DESCRIPTION

     The ipfw system facility allows filtering, redirecting, and other opera-
     tions on IP packets travelling through network interfaces.

     The user interface for ipfw is implemented by the ipfw(8) utility, so
     please refer to the ipfw(8) manpage for a complete description of the
     ipfw capabilities and how to use it.

   Kernel Options
     The following options in the kernel configuration file are related to
     ipfw operation:

     IPFIREWALL 	       enable ipfw
     IPFIREWALL_VERBOSE        enable ipfw logging
     IPFIREWALL_VERBOSE_LIMIT  limit ipfw logging
     IPDIVERT		       enable divert(4) sockets

SEE ALSO

     setsockopt(2), divert(4), ip(4), ipfw(8), sysctl(8), syslogd(8), pfil(9)