Configuring port forwarding in Asus

to do the port forwarding for asus router, you need to go to

1. advanced setting -> Wan -> Virtual Server/ Port Forwarding
2. enable port forwarding “yes”
3. 
4. local ip is the ip address/host you want to do port forwarding
5. local port is the port number of the existing running application
6. port range is the external port. for example, you can have a lot of local port number with different ip address, but you need to have unique port range.
7. click apply to save