Thanks for responding, Phil.
The objective of this experiment is to operate a portable contest station remotely. G4ALE - https://addiscombe.club/
Our usual rig is an IC-7300, hence I am using USB for the experiment. Also, I don’t currently have a way of connecting a router to the hotspot. That will change soon as I have been offered the loan of a 3G router… but I’ll still be restricted to USB for the IC-7300.
The reason for the daisy-chain configuration is that it isn’t possible to establish a connection “inwards” towards the field station, because a 3G/4G connection does not support incoming connections. So the field station has to establish a VPN outwards to a fixed point.
If we only had one remote operator, that would be fine as they could be the end-point for the VPN. However, I’m also anticipating the situation where we could have more than one operator that requires access. Hence a “middle man” solution where only one location (me) runs the VPN server and the wfview client+server. Also I’m trying to make it simple for the remote operators by not requiring them to set up VPN servers, exchange certificates, etc. Hence the daisy-chain configuration.
I’m open to other suggestions of how to crack this nut