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 off-campus), 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.