Solved: how to filter the open port 161

jclakandili · ‎05-08-2018

Is there a way to filter the open port 161 service snmp on cisco 2960 switch?

sbhadrav@cisco.com · ‎07-05-2018

If you just want to turn off SNMP completely, then you can do a no snmp-server on the CLI. Then a show snmp would show %SNMP agent not enabled to verfiy this. Or you can also apply an extended ACL to deny protocol UDP, port 161 and 162, at the interface level such that SNMP access to the device is allowed only from the network management workstations.

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Iliya Gatsev · ‎06-05-2018

Hi,
My name is Iliya Gatsev from Cisco Technical Support Team.

The Catalyst series switches are not considered Small Business devices so I can suggest to post your question in the main Switching section to get to resolution quicker.

Please rate this post or marked as answered to help other Cisco customers.

Iliya Gatsev
Cisco STAC Network Engineer
Together we are the human network .:|:.:|:. CISCO

sbhadrav@cisco.com · ‎07-05-2018

If you just want to turn off SNMP completely, then you can do a no snmp-server on the CLI. Then a show snmp would show %SNMP agent not enabled to verfiy this. Or you can also apply an extended ACL to deny protocol UDP, port 161 and 162, at the interface level such that SNMP access to the device is allowed only from the network management workstations.