Whether the public IP address mapped to the USG5530 must be configured for the external network port or NAT address pool


You only need to configure NAT Server for the mapping instead of configuring the public IP address for the external network port or NAT address pool.

Other related questions:
How do I configure the AR router to map multiple internal IP addresses to external IP addresses using a NAT address pool
A Huawei AR router can use the NAT address pool to implement mapping between internal IP addresses and public IP addresses in the public address pool. The configuration is as follows: 1. Configure a NAT address pool on the router. [Huawei] nat address-group 1 2. Configure an ACL rule to permit the internal address segment that allows NAT translation. [Huawei] acl 2000 [Huawei-acl-basic-2000] rule 5 permit source [Huawei-acl-basic-2000] quit 3. Associate outbound NAT with an address pool on an outbound interface [Huawei] interface gigabitethernet 3/0/0 [Huawei-GigabitEthernet3/0/0] ip address 24 [Huawei-GigabitEthernet3/0/0] nat outbound 2000 address-group 1 [Huawei-GigabitEthernet3/0/0] quit

Must contiguous addresses be specified in a NAT address pool
No. The NAT address pool contains an address segment from a specific start address to a specific end address. You can configure address exclusion to exclude special addresses in this address segment. Therefore, the addresses in the NAT address pool can be non-contiguous. In addition, the start address and end address can be the same. In this case, the NAT address pool contains only one IP address.

Can addresses in a NAT address pool be configured as public addresses mapped to private addresses of intranet servers on an FW enabled with NAT server

Whether an address in the NAT address pool can be configured as a public IP address for NAT Server

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