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syslog port does not seem open on the probe

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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?

prtg sensor syslog

Created on Feb 23, 2018 8:25:01 AM by  daseth (0) 1



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Hello daseth,

Thank you very much for your contact.

Please make sure to configure your syslog ready devices to send syslogs or traps (see the documentation of the respective device vendors). They have to address the PRTG probe where your Syslog or SNMP Trap Receiver sensor runs. So specify the IP address of the machine with the respective PRTG probe. If you keep your syslog or trap receiver's default settings, use the port 514 which should be opened.
Just to check, did you already checked out the corresponding article that describes the approach to monitor syslog and SNMP traps?

Best regards,
Sebastian

Created on Feb 26, 2018 7:59:34 AM by  Sebastian Kniege [Paessler Support]



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Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.