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Cannot specify "mgt" interface as source address for Syslog and SNMP traffic



Article ID: KB7873 KB Last Updated: 07 Aug 2011Version: 6.0
Cannot specify "mgt" interface as source address for Syslog and SNMP traffic


  • The source interface can be selected when configuring the SYSLOG or SNMP logging feature on the firewall, but the "mgt" interface does not appear to be a valid option to select.     (In the WebUI, refer to Configuration > Report Settings > Syslog  and Configuration > Report Settings > SNMP > Community Edit.)
  • When attempting to configure the firewall to allow SNMP traffic the MGT interface isn't a selectable option.

The MGT interface can be used to send out traffic.  Although this interface isn't selectable, specify "none" in the drop-down option for the interface.  Then the firewall will use your routing table to determine how to reach the SNMP server.  Therefore, you need to add a route for traffic destined for the SYSLOG or SNMP server to go out via the "mgt" interface.

The  "mgt" zone is not designated as a security zone as there is no policy that can be created for the "mgt" zone.  The reason to specify "src-interface"  is to use a policy to control traffic based on the source IP address.

This is by design for all ScreenOS versions.

Note: If this configuration doesn't resolve the issue, double check the Community name and Trap version on both the firewall and the SNMP server.

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