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IPFW(4) Device Drivers Manual IPFW(4)

ipfwIP packet filter and traffic accounting

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.

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

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

June 22, 1997 DragonFly-5.6.1