2006-05-22 07:14:54 +00:00
|
|
|
.\" Copyright (c) 2006 Niclas Zeising
|
|
|
|
|
.\" All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
|
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
.\" SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" $FreeBSD$
|
|
|
|
|
.\"
|
|
|
|
|
.Dd May 22, 2006
|
|
|
|
|
.Dt IPFWPCAP 8
|
|
|
|
|
.Os
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm ipfwpcap
|
|
|
|
|
.Nd "copy diverted packets to a file in tcpdump format"
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Nm
|
|
|
|
|
.Op Fl dr
|
|
|
|
|
.Op Fl b Ar maxbytes
|
|
|
|
|
.Op Fl p Ar maxpkts
|
|
|
|
|
.Op Fl P Ar pidfile
|
|
|
|
|
.Ar portnum
|
|
|
|
|
.Ar dumpfile
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
utility is used to copy diverted packets to a file in
|
|
|
|
|
.Xr tcpdump 1
|
|
|
|
|
format.
|
|
|
|
|
The interesting packets are diverted by
|
|
|
|
|
.Xr ipfw 8
|
|
|
|
|
to a port on which
|
|
|
|
|
.Nm
|
|
|
|
|
listens.
|
2006-05-22 07:36:45 +00:00
|
|
|
The packets are then dropped unless
|
2006-05-22 07:14:54 +00:00
|
|
|
.Fl r
|
|
|
|
|
is used.
|
|
|
|
|
.Pp
|
|
|
|
|
The options are as follows:
|
|
|
|
|
.Bl -tag -width Ds
|
|
|
|
|
.It Fl d
|
|
|
|
|
Turns on extra debugging messages.
|
|
|
|
|
.It Fl r
|
|
|
|
|
Writes packets back to the divert socket.
|
|
|
|
|
.It Fl rr
|
|
|
|
|
Indicates that it is okay to quit if
|
|
|
|
|
.Ar maxbytes
|
|
|
|
|
or
|
|
|
|
|
.Ar maxpkts
|
|
|
|
|
are reached.
|
|
|
|
|
Diverted packets will silently disappear if nothing is listening on the
|
|
|
|
|
divert socket.
|
|
|
|
|
.It Fl b Ar maxbytes
|
|
|
|
|
Stop dumping after
|
|
|
|
|
.Ar maxbytes
|
|
|
|
|
bytes.
|
|
|
|
|
.It Fl p Ar maxpkts
|
|
|
|
|
Stop dumping after
|
|
|
|
|
.Ar maxpkt
|
|
|
|
|
packets.
|
|
|
|
|
.It Fl P Ar pidfile
|
|
|
|
|
File to store PID number in.
|
|
|
|
|
Default is
|
|
|
|
|
.Pa /var/run/ipwfpcap.portnr.pid .
|
|
|
|
|
.El
|
|
|
|
|
.Pp
|
|
|
|
|
The
|
|
|
|
|
.Ar portnum
|
|
|
|
|
argument specifies which
|
|
|
|
|
.Xr divert 4
|
|
|
|
|
socket port to listen on.
|
|
|
|
|
The
|
|
|
|
|
.Ar dumpfile
|
2006-05-22 07:36:45 +00:00
|
|
|
argument is the path to the file to write captured packets to.
|
2006-05-22 07:14:54 +00:00
|
|
|
Specify
|
|
|
|
|
.Sq Li -
|
|
|
|
|
to write to stdout.
|
|
|
|
|
.Sh EXIT STATUS
|
|
|
|
|
.Ex -std
|
|
|
|
|
.Sh EXAMPLES
|
|
|
|
|
.Dl ipfwpcap -r 8091 divt.log &
|
|
|
|
|
.Pp
|
|
|
|
|
Starts
|
|
|
|
|
.Nm
|
|
|
|
|
as a background job listening to port 8091 and reflecting the packets
|
|
|
|
|
back to the socket.
|
|
|
|
|
.Pp
|
|
|
|
|
.Dl ipfw add 2864 divert 8091 ip from 192.168.1.101
|
|
|
|
|
.Pp
|
|
|
|
|
Example
|
|
|
|
|
.Xr ipfw 8
|
|
|
|
|
rule to divert all packets from 192.168.1.101 to port 8091.
|
|
|
|
|
See
|
|
|
|
|
.Xr ipfw 8
|
|
|
|
|
for details.
|
|
|
|
|
.Sh SEE ALSO
|
|
|
|
|
.Xr tcpdump 1 ,
|
|
|
|
|
.Xr pcap 3 ,
|
|
|
|
|
.Xr divert 4 ,
|
|
|
|
|
.Xr ipfw 8
|
|
|
|
|
.Sh HISTORY
|
|
|
|
|
The
|
|
|
|
|
.Nm
|
|
|
|
|
utility first appeared in
|
|
|
|
|
.Fx 7.0 .
|
|
|
|
|
.Sh AUTHORS
|
|
|
|
|
.An -nosplit
|
|
|
|
|
.Nm
|
|
|
|
|
was written by
|
|
|
|
|
.An P. Kern Aq pkern@cns.utoronto.ca .
|
|
|
|
|
This manual page was written by
|
|
|
|
|
.An Niclas Zeising Aq lothrandil@n00b.apagnu.se .
|
