Can you login with any other SFTP/SSH client? E.g using PuTTY?
I tried to logged in by putty with SSH client connection type.
After login name entered, following message appears:
NWS Controlled Machine:
This computer is for authorized use only.
If you are not authorized to use it, then you must log off immediately.
The company retains the right to monitor and inspect all electronic communication that takes place on its computers or equipment that accesses its network at any time.
By using this computer, you understand, accept, and consent to comply with the security policies of the company.
If you do not accept these conditions of use, you must log off now. Using keyboard-interactive authentication.
and after entering password, it shows "Enter password" message again and again with "Further authentication required" message as below:
Further authentication required
Using keyboard-interactive authentication.