I found a question on the Microsoft Technet Forums, how can I forward connections to for instance Telnet (tcp/23) to a virtual machine. So Brian Komar already did a correct answer but since I am not really sure that the original poster did really understand the subtle difference between a proxy and a forwarding of IP ports.

But I think it is important to also explain that you can use the PortProxy function built into Windows. It allows you to terminate the TCP session and open a new session to the endpoint. This allows an enduser to telnet to your machine and end up somewhere else.

Required commands

Remember to run these commands with Administrator privileges.

Add IPv4:

netsh interface portproxy add v4tov4 listenport=8080 connectport=80 connectaddress=216.58.201.174

Add IPv6:

netsh interface portproxy add v6tov4 listenport=8080 connectport=80 connectaddress=216.58.201.174

Remove IPv4/IPv6:

netsh interface portproxy delete v6tov4 listenport=8080
netsh interface portproxy delete v4tov4 listenport=8080