.\"	$OpenBSD: pf.4,v 1.4 2001/07/01 22:07:35 angelos Exp $
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.Dd June 24, 2001
.Dt PF 4
.Os
.Sh NAME
.Nm pf
.Nd packet filter
.Sh SYNOPSIS
.Cd "pseudo-device pf 1"
.Sh DESCRIPTION
The
.Nm
interface is a packet filter pseudo-device for IPv4.
.Pp
.Nm
is administered using the
.Xr pfctl 8
utility, or through an ioctl interface.
.Sh FILES
.Bl -tag -width /dev/pf -compact
.It Pa /dev/pf
packet filtering device.
.El
.Sh SEE ALSO
.Xr bridge 4 ,
.Xr pfctl 8
.Sh HISTORY
The
.Nm
packet filtering mechanism first appeared in
.Ox 3.0 .
.Sh BUGS
Probably several.