Explain the nat static command on the AR router

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The nat static command configures one-to-one translation from internal addresses to external addresses in the system or interface view.
The undo nat static command cancels the configuration.
protocol specifies a protocol.

Other related questions:
Explain the nat overlap-address command on the AR router
The nat overlap-address command configures the mapping between an overlapping address pool and a temporary address pool. When IP addresses of internal and external hosts overlap, the mapping between the overlapping address pool and the temporary address pool needs to be configured. After the mapping is configured, the overlapping address is translated into a unique temporary address to ensure correct packet forwarding. Outbound NAT needs to be configured to implement bidirectional NAT.

Explain the nat outbound address-group command on the AR router
The nat outbound acl-number address-group group-index command associates an ACL with an address pool. In this manner, the addresses specified in the ACL can be translated by using the address pool. The undo nat outbound acl-number address-group group-index command disassociates the ACL from an address pool. address-group group-index in the command indicates that the address pool is used for address translation.

Method used to configure static NAT on the AR
Huawei AR routers support static NAT. Use either of the following methods to configure static NAT: Method 1: Configure static mapping in the interface view. Translate the combination of the public IP address 202.10.10.1 and port 200 in TCP packets to the combination of the private IP address 10.10.10.1 and port 300. [Huawei] interface gigabitethernet 1/0/0 [Huawei-GigabitEthernet1/0/0] nat static protocol tcp global 202.10.10.1 200 inside 10.10.10.1 300 Method 2: Configure static mapping in the system view. Translate the combination of Loopback 4 interface address and port 43 in TCP packets to private address 192.168.2.55. [Huawei] nat static protocol tcp global interface loopback 4 43 inside 192.168.2.55 netmask 255.255.255.255 For details on the static NAT configuration, see "NAT Configuration->Configuring NAT->Configuring Static NAT" in Configuration Guide - IP Service.

What is the interpretation of "NAT static" command on AR router?
The "NAT static" command of the AR router is used to configure a one to one conversion from the internal address to the external address in the global or interface. "Undo NAT static" command is used to remove the global or interface has been configured NAT one to one conversion. If the protocol keyword is configured, a specific protocol is specified.

What is the difference between the Static NAT and NAT Server on AR router?
The difference between NAT Server and NAT Static configuration is: NAT Server to access the Internet from intranet, only do address replace, but NAT Static for network address; active access outside the network will also replace the address and port number.

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