I assume that entering an incorrect account/password combo X times will invoke the auto-ban feature. I'm seeing our ONE customer on this platform [i]occasionally[/i] suddenly being denied when connecting. Once the rejections occur, I have to restart the service to clear the problem.
The only thing the logs show is that immediately prior, the user -might- have exceeded the connection limit.
Does exceeding the connection limit count as an "infraction" towards the auto ban? For right now, as a troubleshooting step, I have increased the connection limit, and also turned off auto-ban. The one customer using our registered version is whitelisted, *.*.*.* is denied, and that is keeping uninvited folks out of the server, but every once in a while the legitimate customer is just flat rejected when trying to connect.
Looking for what might be causing this. Thanks. They're using SFTP to connect.