- You already have a Kerberos server
- Your /etc/krb5.conf is correct
- You already have a host/your.host.fqdn@YOUR-REALM princpal
- The principal is already in your keytab
- You already added GSSAPIAuthentication yes to /etc/ssh/sshd_config on the server
- You already added GSSAPIAuthentication yes to /etc/ssh/ssh_config on the client
- You hve a local user in the remote server
- You already installed libpam-krb5
- your IP reverse-resolves to your fqdn (for all hosts in your network)
- your fqdn resolves to your ip (for all hosts in your network)
Why is it not working????
Because you have the line «127.0.1.1 yourhost» on /etc/resolv.conf. Comment it out.
Now do «hostname -f». it should return your fqdn.
That was it.