Method used to publish different public IP addresses for different carriers using NAT Server on the USG6000 series

By configuring NAT Server, the USG6000 can publish different public IP addresses for different carriers.
If the egresses of different carriers are in the same security zone, you need to add the no-reverse parameter when configuring NAT Server. For example:
nat server 3 protocol tcp global 3.3.3.3 1111 inside 5.5.5.5 80 no-reverse
nat server 4 protocol tcp global 4.4.4.4 1111 inside 5.5.5.5 80 no-reverse
If the egresses of different carriers are in the separated security zones, you need to configure the security zone-based NAT server, and the no-reverse parameter is not required. For example:
NAT server 3 zone ISP1 protocol tcp global 3.3.3.3 1111 inside 5.5.5.5 80
NAT server 4 zone ISP2 protocol tcp global 4.4.4.4 1111 inside 5.5.5.5 80

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