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Auto discover through a firewall

Modified on 2025-06-10 11:32:15 +0200

Hi, I am trying to auto-discover sensor on Cisco routers and it only discovers ping. These cisco routers have access-lists on them so only permit specific ports and protocols through. what port and protocols do I need to permit on the access-list for PRTG to get information from all the sensors that are available by default on Cisco routers? i.e other interfaces, Memory, CPU etc.. Thanks, Jaime

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Hello,

usually it's at least SNMP on UDP Port 161 (on the target device).

best regards.

Mar, 2012 - Permalink

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Auto discover through a firewall

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Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.