I'm trying to get my iDevice to use its USB connection for all network access, instead of WiFi. I had thought it would be as simple as using a VPN, and routing that VPN through some ports I'm forwarding from the iDevice, but that's not quite working.

Have I misconfigured something, or is it simply not possible to tunnel PPTP over SSH?

I've forwarded ports 1723 and 47 (using ssh -R) from the device to the PPTP server and configured the client to connect to localhost. However, it fails to connect.


SSH tunnels TCP. AFAIK it is not possible to ssh tunnel GRE.

The 47 is the IP protocol number for GRE. It is not a port number. GRE is a protocol at the same layer as TCP or UDP. GRE is directly above IP.

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