.\" $NetBSD: ipfilter.5,v 1.4 2002/03/14 12:32:42 martti Exp $ .\" .TH IPFILTER 1 .SH NAME IP Filter .SH DESCRIPTION .PP IP Filter is a package providing packet filtering capabilities for a variety of operating systems. On a properly setup system, it can be used to build a firewall. .SH SEE ALSO ipf(8), ipf(1), ipf(5), ipnat(8), ipnat(5), mkfilters(1)