*Last two paramters were added as used in the ssh tunnel demo at #GPN19 https://media.ccc.de/v/gpn19-76-einen-server-daheim-ohne-ffentliche-ipv4-adresse#t=911*
You can add those at the end of the file, save and reboot.
On the RaspiBlitz you can then setup for example to forward the gRPC port 10009 (internal port) to the port 20009 on the public server (external port) with the user = `test` and server address = `raspiblitz.com` with the following command: