Configure DNAT to access the local printer in Grandstream GWN70XX router

Configure DNAT to access local printer in Grandstream GWN router


Destination NAT or DNAT, changes the destination address in the IP header of a packet and the destination port in the TCP/UDP headers. It is used to redirect incoming packets with a public address/port to a private IP address/port in your network.

Configuration steps:

Figure 1. Set the ‘Source Port’ empty. In DNAT rules, the Source Port = the source port of the client when accessing the router; the destination port within the configuration still denotes the destination port being accessed by the client from its perspective.


Port forwarding rules must be removed (not disabled) in the router. Otherwise, it may not work.