IP->Com is a freeware program to share all/any your COM ports remotely over your local network or the Internet, simultaneously.
It allows any of the existing serial (RS232) ports on your PC to interface directly to a TCP/IP network. This makes it possible for any other computer on the same network to send and receive serial data through a remote serial port on the PC where IP->Com is running. You connect to the remote serial port by connecting to a TCP/IP port.
To use IP->Com, simply select the COM port, configure it, and then select which interface address/port to bind it to. From there, you press Enable and you are done. These steps are repeated for any other COM ports up to COM32.
Simple Port Forwarding works with webpages and not directly with your router making it a safe program to use. Supports 52 Languages and 2600+ routers. Portable version also available.