Hello all,

I've got a few computers in seperate subnets which I do not allow to
communicate with each other.
When I need to transfer data between computers in those subnets I use an USB
stick.

Somehow my thoughts went to if it would be possible to use an RPi 3B+ as a
kind go-between.

The first problem would be that I would need to add another (or more)
ethernet connection (so the 'puters on one subnet cannot reach 'puters on
the other one).  Is that at all possible (at a usable speed) ?

The second would be to how to transfer data from one subnet to the other.

For that I could imagine a kind of "post office" solution, where 'puters on
both subnets can leave messages for each other and ofcourse read each others
replies, but never directly talk to each other.  (both 'puters connect to a
known port on the RPi).

Does anyone know if such a sulution or project (and tutorial?) for such a
thing exists ?

Regards,
Rudy Wieser

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