I have a customer running a Barracuda Web Filter 310. The system claims to have SNMP enabled over v2c, has the community string configured and it has the PRTG server IP listed as allowed for SNMP requests.
There is a settings for SNMP traps but, from the reading, this should not be required so has not been configured.
I happen to be lucky to know how to spell Barracuda, but my interaction with those devices have been a solid nil. Both PRTG and the SNMP Tester receive "No response (check: firewalls, routing, snmp settings..) (SNMP error #-2003)."
Does anyone have any thoughts?