1 .\" $OpenBSD: pflog.4,v 1.7 2004/03/21 19:47:59 miod Exp $
2 .\" $DragonFly: src/share/man/man4/pflog.4,v 1.4 2007/07/29 17:27:45 swildner Exp $
4 .\" Copyright (c) 2001 Tobias Weingartner
5 .\" All rights reserved.
7 .\" Redistribution and use in source and binary forms, with or without
8 .\" modification, are permitted provided that the following conditions
10 .\" 1. Redistributions of source code must retain the above copyright
11 .\" notice, this list of conditions and the following disclaimer.
12 .\" 2. Redistributions in binary form must reproduce the above copyright
13 .\" notice, this list of conditions and the following disclaimer in the
14 .\" documentation and/or other materials provided with the distribution.
16 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 .Nd packet filter logging interface
38 interface is a pseudo-device which makes visible all packets logged by
41 Logged packets can easily be monitored in real
46 interface, or stored to disk using
49 Each packet retrieved on this interface has a header associated
52 This header documents the address family, interface name, rule
53 number, reason, action, and direction of the packet that was logged.
54 This structure, defined in
57 .Bd -literal -offset indent
63 char ifname[IFNAMSIZ];
64 char ruleset[PF_RULESET_NAME_SIZE];
72 .Bd -literal -offset indent
74 # tcpdump -n -e -ttt -i pflog0
87 device first appeared in
89 and was then integrated into
91 by Devon H. O'Dell and Simon Schubert.