SFTP troubleshooting for websites.sou.edu connections

There are a number of factors that can lead to a user not being able to log into webpages.sou.edu: misconfigured client, denied host certificate, banned by fail2ban (only offcampus), etc.  Therefore, in order to more fully diagnose the issue(s) that are occurring it would be helpful to have the following information:

If the user can connect via remotedesktop but not from home, then this points to some local client or authentication issue: fail2ban, home network connectivity, SFTP client misconfiguration and/or denied host certificate; however, if it is a problem both via Remote Desktop AND from home then it would point to some other issue on the server.