After watching Tom’s video I managed to port forward my.ip:9000 to 192.168.30.11:9000.
What I am wanting to do however is forward 80 to 9000 instead.
I thought all I would need to do was to add the source port but this did not work. After doing the below neither 80 or 9000 were seen as open by a port scanner and I could no longer reach 192.168.30.11 from my external IP
You don’t need to modify the source port. That’s the port on the client machine and it’s always random. Leave it at any.
Destination address and port denote the original destination that clients use in their requests. This will be your WAN address and port 80. NAT IP and port is where this traffic should be forwarded to. That’s 192.168.30.11 and port 9000 in your case.