1*86d7f5d3SJohn Marino.\" 2*86d7f5d3SJohn Marino.\" $FreeBSD: src/share/man/man4/ipfirewall.4,v 1.19.2.7 2002/11/18 21:51:16 luigi Exp $ 3*86d7f5d3SJohn Marino.\" $DragonFly: src/share/man/man4/ipfirewall.4,v 1.5 2007/07/29 16:43:05 swildner Exp $ 4*86d7f5d3SJohn Marino.\" 5*86d7f5d3SJohn Marino.Dd June 22, 1997 6*86d7f5d3SJohn Marino.Dt IPFW 4 7*86d7f5d3SJohn Marino.Os 8*86d7f5d3SJohn Marino.Sh NAME 9*86d7f5d3SJohn Marino.Nm ipfw 10*86d7f5d3SJohn Marino.Nd IP packet filter and traffic accounting 11*86d7f5d3SJohn Marino.Sh DESCRIPTION 12*86d7f5d3SJohn Marino.Nm Ipfw 13*86d7f5d3SJohn Marinois a system facility which allows filtering, 14*86d7f5d3SJohn Marinoredirecting, and other operations on IP packets travelling through 15*86d7f5d3SJohn Marinosystem interfaces. 16*86d7f5d3SJohn Marino.Pp 17*86d7f5d3SJohn MarinoThe user interface for 18*86d7f5d3SJohn Marino.Nm 19*86d7f5d3SJohn Marinois implemented by the 20*86d7f5d3SJohn Marino.Xr ipfw 8 21*86d7f5d3SJohn Marinoprogram. 22*86d7f5d3SJohn Marino.Sh KERNEL OPTIONS 23*86d7f5d3SJohn MarinoThe following options in the kernel configuration file are related to 24*86d7f5d3SJohn Marino.Nm 25*86d7f5d3SJohn Marinooperation: 26*86d7f5d3SJohn MarinoOptions in the kernel configuration file: 27*86d7f5d3SJohn Marino.Bl -tag -width ".Cd options IPFIREWALL_VERBOSE_LIMIT" 28*86d7f5d3SJohn Marino.It Cd options IPFIREWALL 29*86d7f5d3SJohn Marinoenable 30*86d7f5d3SJohn Marino.Nm 31*86d7f5d3SJohn Marino.It Cd options IPFIREWALL_VERBOSE 32*86d7f5d3SJohn Marinoenable firewall logging 33*86d7f5d3SJohn Marino.It Cd options IPFIREWALL_VERBOSE_LIMIT 34*86d7f5d3SJohn Marinolimit firewall logging 35*86d7f5d3SJohn Marino.It Cd options IPDIVERT 36*86d7f5d3SJohn Marinoenable 37*86d7f5d3SJohn Marino.Xr divert 4 38*86d7f5d3SJohn Marinosockets 39*86d7f5d3SJohn Marino.El 40*86d7f5d3SJohn Marino.Sh SEE ALSO 41*86d7f5d3SJohn Marino.Xr setsockopt 2 , 42*86d7f5d3SJohn Marino.Xr divert 4 , 43*86d7f5d3SJohn Marino.Xr ip 4 , 44*86d7f5d3SJohn Marino.Xr ipfw 8 , 45*86d7f5d3SJohn Marino.Xr sysctl 8 , 46*86d7f5d3SJohn Marino.Xr syslogd 8 47