Use the SSH command on the job execution host to connect it securely with the job submission host.
If the host fails to connect, you can perform the following steps to troubleshoot.
If the hosts have different SSH versions, a message displays identifying a protocol version mismatch.
More information on configuring key pairs is here: http://sial.org/howto/openssh/publickey-auth/.
$ ssh –f –L 6000:localhost:6000 domain_name.example.com date
$ ssh –f –L 6000:localhost:6000 domain_name date
If these commands return errors, troubleshoot the domain name with the error information returned.
The execution host should connect without passwords and pass phrases.
$ ssh sahpia03$ ssh sahpia03.example.com
$ ssh sahpia03
$ ssh sahpia03.example.com