How to configure all-port mapping on the AR


# Configure the NAT server on a public network interface to map all TCP ports with public IP address to all ports with private IP address

<Huawei> system-view
[Huawei] interface gigabitethernet 1/0/0
[Huawei-GigabitEthernet1/0/0] nat server protocol tcp global inside

More information

If an enterprise has two or more allocatable public IP addresses and an internal server needs to provide services for public network users, all-port mapping can be configured for one public IP address. If you do not specify the range of port numbers open to public network users in the nat server command, all ports of the internal server are mapped to the same public IP address. That is, the server provides all types of services to public network users using all ports with the public IP address. If the IP address of a public network interface is used to provide services to public network users, configuring all-port mapping on this interface will cause failures of public network users to access the web interface or other services on the AR router, because all port numbers associated with the IP address are mapped to the internal server. Therefore, if only one public IP address is available, you are advised to configure mapping of specific port numbers. All-port mapping allows multiple ports to be mapped at one time, but this configuration lowers the network security because all ports are open to the public network.

Other related questions:
How do I configure batch port mapping
Configure port mapping on an AR router
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