Hello Carl,
the entries visible in the screenshot look ok, but it doesn't show if a proxy has been configured. If internet connection works via an http proxy for your location, please make sure to specify the proxy in the SCC configuration.
If this is configured correctly, please check if the tunnel process is running as expected on your Linux box (verify this via "service slot-0 info" in a shell; if the process is not running, try to start it via "service slot-0 start"; check afterwards again the status "service slot-0 info").
Thanks,
Timo