Revision as of 10:52, 6 May 2014

tcpdump is a command that allows you to monitor your network traffic.

Examples

You can watch out for dhcp communication on your network using:

tcpdump -i eth1 port 67 and port 68

You can display incoming snmp traps using:

tcpdump -A port 162 -l | hexdump -C

@@ Line 1: / Line 1: @@
-tcpdump is a [[command]] that allows you to monitor your network traffic. For example you can watch out for dhcp communication on your network using:
+tcpdump is a [[command]] that allows you to monitor your network traffic.
+= Examples =
+== dhcp ==
+You can watch out for dhcp communication on your network using:
   tcpdump -i eth1 port 67 and port 68
+== SNMP ==
+You can display incoming [[snmp]] traps using:
+ tcpdump <abbr title="display all data">-A</abbr> <abbr title="SNMP trap port">port 162</abbr> <abbr title="print output with linefeeds and flushing to allow piping>-l</abbr> | [[hexdump]] -C
 = See also =