Configuration example

[norge169]

Can the AutoTunnel be used like Proxifier? Basically I want use AutoTunnel to intercept the TCP and UDP traffic to a private IP address and send them to a public server which has the forwarded port .

If you can give a picture like the following

Client computer (gray ip, NAT) <-> Router <-> (Internet) <-> Router <-> Proxy <-> Server (NAT)
192.168.1.42 <-> 192.168.1.1|91.10.20.42 <-> (Internet) <-> 82.40.10.1 <-> 82.40.10.54 <-> 10.0.1.15

and specify their roles (tunnelhost, connecthost, proxyhost) and the config.json file for each, specify the network border, it would be better to use.

[force-net]

Sorry for delay.
I'll try to clarify these situation in documentation.

In your case (public server with forwarded port) you should not use proxy. You need to specify tunnelHost to your public server and connectHost to private IP address