Q: Why do I get prompted for my password when connecting from a Debathena machine via SSH?

Answer

Unlike Athena 9, Debathena does not send Kerberos tickets to the remote server by default. To log into a trusted Athena server that requires Kerberos tickets, you must either type your Kerberos password, or use ssh -K to send a copy of your local tickets.

If you wish to make this your default setting, please see How do I configure SSH to always delegate my Kerberos tickets?