NAME

snmp__netstat - Munin plugin to monitor the number of TCP network connections on an SNMP device.

APPLICABLE SYSTEMS

Any SNMP-capable device that reports the TCP-MIB::tcpConnState column of tcpConnTable.

CONFIGURATION

As a rule SNMP plugins need site specific configuration. The default configuration (shown here) will only work on insecure sites/devices.

   [snmp_*]
        env.version 2
        env.community public

In general SNMP is not very secure at all unless you use SNMP version 3 which supports authentication and privacy (encryption). But in any case the community string for your devices should not be "public".

Please see 'perldoc Munin::Plugin::SNMP' for further configuration information.

INTERPRETATION

The total number of TCP connections in each state. See RFC 793 or the detailed information on the graph page for the meaning of each state.

MIB INFORMATION

This plugin requires support for the TCP-MIB (RFC 4022). It reports the contents of the tcpConnState column of tcpConnTable.

MAGIC MARKERS

  #%# family=snmpauto
  #%# capabilities=snmpconf

VERSION

  $Id$

BUGS

None known.

AUTHOR

Copyright (C) 2006 Lars Strand

Tidied and documented by Matthew Boyle in 2010.

LICENSE

GPLv2.