help - how to check archives and known issue

[Deepak Garg]

Dear team 
Need two help, we are using OpenSSH 7.x on a Windows Server 2019 for SFTP connection from public IPs.
We are facing an issue that every few minutes (10-15), connection from outside stop working and error is "Connection Refused".
We didn't find anything in the logs and logs don't make any entry for such, to resolve the issue for now we have enabled a task in Windows to restart the OPenssh service every 10 minutes and now its working.

Any suggestion, how we can troubleshoot? 

Regards
Deepak Garg

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