Hi team,

We now meet an issue when remote client sftp connect to our windows ssh server concurrently, occasionally the client get "Connection Refused" error.
We can for sure the inetd service is up-and-running, port is correct the same. sftp client is connecting to same FQDN/user/port. There shall not be firewall block in between. The current max connection in ssh server is set to 2000 and in testing env it's for sure much less than that number.

Would like to seek your advise to see how to further investigate the root cause for this? (As the connection refused error is before the connection established.)  Appreciated in advance.

Attached couple of screens for failure and normal case client debug log (-v), and one screenshot for the TCP monitoring, it's windows ssh server send RST ack to reset the conn causing connection refused.