What is port forwarding
Port forwarding (also port mapping) is a technique of translating the address and/or port number of a network packet to a new destination. Port forwarding allows remote computers, located on the Internet, to connect to a specific computer or service within a private local area network (LAN).
Port forwarding rules are set on routers or other network devices that act as an Internet gateway for other computers in a local network.
You can learn more about port forwarding on PortForward.com.
Port forwarding for Host
You must create a port forwarding rule on the router if you are connecting directly (i.e. using the direct connection) to a Host from the outside of the local network.
In most cases to create a port forwarding rule you need the following information:
- The Host computer local IP address (for example,
- Host listening port (
If there are multiple Hosts you should use a unique port for each Host. Alternatively, you can use the Connect through Host feature.
Port forwarding for RU Server
If you use the Internet-ID connection and connect via our public servers, you don't need port forwarding. However, if you use RU Server, you must configure port forwarding for RU Server. See Making RU Server accessible.