.TH ipmon 8
.SH NAME
ipmon \- monitors /dev/ipl for logged packets
.SH SYNOPSIS
.B ipmon
[
.B \-asfnSN
] [
<filename>
]
.SH DESCRIPTION
.LP
\fBipmon\fP opens \fB/dev/ipl\fP for reading and awaits data to be saved from
the packet filter.  The binary data read from the device is reprinted in
human readable for, however, IP#'s are not mapped back to hostnames, nor are
ports mapped back to service names.  The output goes to standard output by
default or a filename, if given on the command line.  Should the \fB\-s\fP
option be used, output is instead sent to \fBsyslogd(8)\fP.  Messages sent
via syslog have the day, month and year removed from the message, but the
time (including microseconds), as recorded in the log, is still included.
.SH OPTIONS
.TP
.B \-s
Packet information read in will be sent through syslogd rather than
saved to a file.  The following levels are used:
.IP
.B LOG_INFO
\- packets logged using the "log" keyword as the action rather
than pass or block.
.IP
.B LOG_NOTICE
\- packets logged which are also passed
.IP
.B LOG_WARNING
\- packets logged which are also blocked
.IP
.B LOG_ERR
\- packets which have been logged and which can be considered
"short".
.TP
.B \-a
Open all of the device logfiles for reading log entries from.
.TP
.B \-f
Flush the current packet log buffer.  The number of bytes flushed is displayed,
even should the result be zero.
.TP
.B \-n
IP addresses and port numbers will be mapped, where possible, back into
hostnames and service names.
.TP
.B \-N
Treat the logfile as being composed of NAT log records.
.TP
.B \-S
Treat the logfile as being composed of state log records.
.SH DIAGNOSTICS
\fBipmon\fP expects data that it reads to be consistant with how it should be
saved and will abort if it fails an assertion which detects an anomoly in the
recorded data.
.SH FILES
/dev/ipl
.SH SEE ALSO
ipf(1), ipfstat(1)
.SH BUGS