We are trying to set up syslog monitoring for a backup device. We have configured remote logging on the device that should generate the syslog messages to send them to the PRTG probe. No messages are coming in.
When testing the syslog port 514 on the prtg probe from the monitored device, it appears closed. Prtg probe is running on a windows machine with Windows firewall disabled. No other security application is running on the probe that could potentially block it.
The interesting part is that we have tested with another machine on the same subnet and syslog messages sent from this device do get received by the probe.
So the question is: should port 514 appear open on the probe from outside? Can anyone confirm that UDP port 514 is open when testing from the LAN?