Ngrok – Expose any local server behind a NAT or firewall to the Internet
As is usually mentioned in reference to this, the same can be achieved on the command line with:`ssh user@yourserver.com -R [remoteport]:localhost:[localport]`Where 'yourserver.com' is a server you own, such that accessing 'http://yourserver.com:[remoteport]' tunnels to 'http://localhost:[localport]'.