[Ovmsdev] Reverse connections (module -> developer)
leres at xse.com
Tue Feb 4 06:11:26 HKT 2020
> 2. Leverage SSH
> SSH has a port forwarding facility built in, that wolfssh seems to
> support. It is also possible to do a reverse ssh client.
> The advantage here is security (very strong encryption and
> The disadvantage is complexity and the fact that the developer end
> needs to poke a hole in their firewall (and possibly do NAT port
> forwarding, etc) to allow the incoming connections from the car.
> P.S. To save you time, the reverse SSH (using normal Unix like systems)
> works like this:
> Say developer at IP address A wants to connect to module at IP
> address B.
> On the module: $ ssh -R 19999:localhost:22 <user-A>@<A>
> (And go through authentication for B to ssh to A)
> Then, on the developer’s workstation: $ ssh -p 19999
I like #2, I can imagine something in ovms to try manage a ssh session
and try and keep it logged in. And some config to keep a ssh key and
port configuration. Seems like this could be used for canbus log capture
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