I have found a way to forward requests from one machine's specific port to another machine's specific port. There is a package called socat for this.
A short example:
socat -v tcp4-listen:port1,reuseaddr,fork tcp4:address:port2
In this case:
- port1 - the port the local machine is listening on
- address - the IP address of the machine the traffic is forwarded to
- port2 - the port the remote machine is listening on