How to diagnose unresponsiveness of OpenVPN?

[DominikHoffmann]

I manage two systems, where I have this issue: A Netgate 1100 and a Netgate 2100. On both, after a few weeks, the OpenVPN service fails to respond. I usually fix this by going into Status → OpenVPN and restarting the service.

I’d like to improve the service’s reliability and am therefore looking for suggestions on how to track down the source of the problem.

[viragomann]

@dominikhoffmann
Best to check the logs for hints on both ends: system, OpenVPN
Ensure that the OpenVPN log level is set to a proper value. 3 might be sufficient for this issue.