Function of allowing a server to access the Internet using the public IP address in NAT server mode

When this function is used, the device can translate the private IP address of an intranet server to a public IP address, so that the server can use the public IP address to access the Internet.
When this function is not used, the device cannot translate the private IP address to the public IP address, so that the server is prohibited to positively initiate a connection to the Internet.
Considering the security, this function should be disabled if there is no requirement for positive server access to the Internet.

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