Restrictions on using hot standby together with NAT on the USG2000 and USG5000 series

Restrictions on using hot standby together with NAT: 1. When hot standby runs together with NAT, the upstream and downstream service interfaces of the active and standby devices must be Layer 3 interfaces. 2. In the load balancing networking, if you configure only one NAT address pool and do not configure port translation in the address pool-based source NAT policy, the two firewalls may translate the source IP addresses of traffic from different hosts to the same IP address, causing address conflicts. 3. When you configure the VRRP group, bind the NAT address pool or NAT server with the management group.

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