Copy the whole pyPass folder to the remote server.
Run local.py on local server and run remote.py on remote server. And then it works. U can access your local server ports by access your remote server ports.
If there is an error like: "No module named 'xxx'", run command: "sudo pip3 install xxx" to install the lost module.
Execute when boot up
For Ubuntu, write this command in /etc/rc.local before "exit 0":