DragonFly On-Line Manual Pages : ipfirewall(4)

IPFW(4) DragonFly Kernel Interfaces Manual IPFW(4)
NAME
 ipfw -- IP packet filter and traffic accounting
DESCRIPTION
 Ipfw is a system facility which allows filtering, redirecting, and other
 operations on IP packets travelling through system interfaces.
 The user interface for ipfw is implemented by the ipfw(8) program.
KERNEL OPTIONS
 The following options in the kernel configuration file are related to
 ipfw operation: Options in the kernel configuration file:
 options IPFIREWALL enable ipfw
 options IPFIREWALL_VERBOSE enable firewall logging
 options IPFIREWALL_VERBOSE_LIMIT limit firewall logging
 options IPDIVERT enable divert(4) sockets
SEE ALSO
 setsockopt(2), divert(4), ip(4), ipfw(8), sysctl(8), syslogd(8)
DragonFly 3.5 June 22, 1997 DragonFly 3.5