Forwards a single TCP port from localhost to a remote server. Installs as a Windows service, or can be run in debug mode. Tool must be installed on both ends of the connection.

This solves any issues where a VPN gets in the way of SQL Server connections.

Service will not autmatically start on install. You must start "Existco TCP Tunnel" from services.msc

Remember to add the .exe to the firewall on the server, and create the necessary port forward on the router.

Server:
	Bind IP: 0.0.0.0
	Bind Port: <any publicly accessible port>
	Forward Host: <IP address of SQL Server, usually 127.0.0.1>
	Forward Port: <port number of SQL Server instance>
	Mode: Server
	Pre-shared Key: <random string of characters>

Client:
	Bind IP: 127.0.0.1
	Bind Port: <any free local port number>
	Forward Host: <IP/host/DNS name of remote server>
	Forward Port: <same port as "Bind Port" in server>
	Mode: Client
	Pre-shared KeyL <same value as "Pre-shared Key" in server>