1ipmon(1M) System Administration Commands ipmon(1M)
2
6 ipmon - monitors /dev/ipl for logged packets
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9 ipmon [-abDFhnpstvxX] [-N device] [ [o] [NSI]] [-O [NSI]]
10 [-P pidfile] [-S device] [-f device] [filename]
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14 The ipmon command is part of a suite of commands associated with the
15 Solaris IP Filter feature. See ipfilter(5).
16 The ipmon command opens /dev/ipl for reading and awaits data to be
19 saved from the packet filter. The binary data read from the device is
20 reprinted in human readable form. However, IP addresses are not mapped
21 back to hostnames, nor are ports mapped back to service names. The out‐
22 put goes to standard output, by default, or a filename, if specified on
23 the command line. Should the -s option be used, output is sent instead
24 to syslogd(1M). Messages sent by means of syslog have the day, month,
25 and year removed from the message, but the time (including microsec‐
26 onds), as recorded in the log, is still included.
27 Messages generated by ipmon consist of whitespace-separated fields.
30 Fields common to all messages are:
31 o The date of packet receipt. This is suppressed when the mes‐
33 sage is sent to syslog.
34 o The time of packet receipt. This is in the form HH:MM:SS.F,
36 for hours, minutes, seconds, and fractions of a second
37 (which can be several digits long).
38 o The name of the interface on which the packet was processed,
40 for example, ib1.
41 o The group and rule number of the rule, for example, @0:17.
43 These can be viewed with ipfstat -in for input rules or ipf‐
44 stat -in for output rules. See ipfstat(1M).
45 o The action: p for passed, b for blocked, s for a short
47 packet, n did not match any rules, or L for a log rule.
48 o The addresses. This is actually three fields: the source
50 address and port (separated by a comma), the symbol →, and
51 the destination address and port. For example:
52 209.53.17.22,80 → 198.73.220.17,1722.
53 o PR followed by the protocol name or number, for example, PR
55 tcp.
56 o len followed by the header length and total length of the
58 packet, for example, len 20 40.
59 If the packet is a TCP packet, there will be an additional field start‐
62 ing with a hyphen followed by letters corresponding to any flags that
63 were set. See ipf.conf(4) for a list of letters and their flags.
64 If the packet is an ICMP packet, there will be two fields at the end,
67 the first always being icmp, the next being the ICMP message and sub‐
68 message type, separated by a slash. For example, icmp 3/3 for a port
69 unreachable message.
70
72 The following options are supported:
73 -a
75 Open all of the device logfiles for reading log entries. All
77 entries are displayed to the same output device (stderr or syslog).
78 -b
81 For rules which log the body of a packet, generate hex output rep‐
83 resenting the packet contents after the headers.
84 -D
87 Cause ipmon to turn itself into a daemon. Using subshells or back‐
89 grounding of ipmon is not required to turn it into an orphan so it
90 can run indefinitely.
91 -f device
94 Specify an alternative device/file from which to read the log
96 information for normal IP Filter log records.
97 -F
100 Flush the current packet log buffer. The number of bytes flushed is
102 displayed, even if the result is zero.
103 -h
106 Displays usage information.
108 -n
111 IP addresses and port numbers will be mapped, where possible, back
113 into hostnames and service names.
114 -N device
117 Set the logfile to be opened for reading NAT log records from or to
119 device.
120 -o letter
123 Specify which log files from which to actually read data. N, NAT
125 logfile; S, state logfile; I, normal IP Filter logfile. The -a
126 option is equivalent to using -o NSI.
127 -O letter
130 Specify which log files you do not wish to read from. This is most
132 commonly used in conjunction with the -a. Letters available as
133 parameters are the same as for -o.
134 -p
137 Cause the port number in log messages always to be printed as a
139 number and never attempt to look it up.
140 -P pidfile
143 Write the PD of the ipmon process to a file. By default this is
145 /var/run/ipmon.pid.
146 -s
149 Packet information read in will be sent through syslogd rather than
151 saved to a file. The default facility when compiled and installed
152 is local0. The following levels are used:
153 LOG_INFO
155 Packets logged using the log keyword as the action rather than
157 pass or block.
158 LOG_NOTICE
161 Packets logged that are also passed.
163 LOG_WARNING
166 Packets logged that are also blocked.
168 LOG_ERR
171 Packets that have been logged and that can be considered
173 "short".
174 -S device
178 Set the logfile to be opened for reading state log records from or
180 to device.
181 -t
184 Read the input file/device in the way performed by tail(1).
186 -v
189 Show TCP window, ack, and sequence fields
191 -x
194 Show the packet data in hex.
196 -X
199 Show the log header record data in hex.
201
204 o /dev/ipl
205 o /dev/ipnat
207 o /dev/ipstate
209
211 See attributes(5) for descriptions of the following attributes:
212 ┌─────────────────────────────┬─────────────────────────────┐
217 │ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
218 ├─────────────────────────────┼─────────────────────────────┤
219 │Availability │SUNWipfu │
220 ├─────────────────────────────┼─────────────────────────────┤
221 │Interface Stability │Committed │
222 └─────────────────────────────┴─────────────────────────────┘
223
225 ipf(1M), ipfstat(1M), ipnat(1M), attributes(5), ipfilter(5)
226
231 ipmon expects data that it reads to be consistent with how it should be
232 saved and aborts if it fails an assertion which detects an anomaly in
233 the recorded data.
234SunOS 5.11 3 Apr 2008 ipmon(1M)