Port Range Forwarding allows an IP port range from one network to be used in another network. The firewall within the EIPR will block all communications originated on the WAN side. To pass certain messages through the firewall, use port range forwarding. In the WAN IP Port, enter the Start and End WAN IP port number corresponding to the range to be forwarded - then select the IP protocols to be forwarded: TCP, UDP or Both. Next enter the IP address of the computer on the LAN side which will receive these messages. Selecting Enabled will cause the EIPR to utilize the entry.
NAT Loopback provides the ability to have a request originating from an EIPR LAN side device using the WAN IP address redirect back to an internal device as indicated by the port range forwarding entries. For example, this can be used to create a hyperlink using the WAN IP address that can work from either of the LAN side or the WAN side of the EIPR.
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