Create the krb5.conf file under /etc/krb5.conf. It can be found on the Leland servers under /etc/krb5.conf
Test if the Kerberos Client is working
Type kinit SUnetID. Where SUnetID is your own SUnetID.
Type klist to check if you Kerberos ticket was returned.
Configure Kerberos Client
As a superuser type "setup"
A new windows called Choose a Tool appears
Select Authentication configuration
Select Use MD5 Passwords, Use Shadow Passwords, Use Kerberos
The next window called Kerberos Settings should be auto populated. If not, check to ensure the /etc/krb5.conf file is correct compared with the Leland copy.
Create a new user with the username matching their SUnetID. You can create them a local account "shadow" password or not. If you create them a local password, than they have the option of either logging in with their SUnet password or their local account "shadow" password.