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Each time you connect to the Centre via ssh, you will need a valid SSH certificate. Fresh certificate can be obtained from the Centre's Teleport service by executing "tsh login" command on the laptop. These certificates are valid for 12 hours. "tsh login" may ask you for your ECMWF login credentials (security token). If you already have a valid certificate, this authentication prompt will be skipped.

Connecting to ecFlow servers at the Centre via SSH

At home, you don't have direct access to the Centre's ecFlow servers. However, you can use SSH to connect ecflow_ui running on your laptop with ecFlow servers at ECMWF. The basic idea is that the SSH daemon running on your workstation at ECMWF will "pretend" to be an ecflow_ui, forwarding network connections from your real ecflow_ui at home to the Centre's ecFlow servers. There are two ways of doing it. Both methods rely on the Port Forwarding functionality built into OpenSSH software suite. 

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