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Dell PowerConnect ArubaOS 5.0 | User Guide External Services Interface | 589
Figure 125 Example NAT-Mode Topology
In this example, all HTTP traffic received by the controller is redirected to the external captive portal server group
and load-balanced across the captive portal servers. All wireless client traffic with destination port 80 is redirected
to the captive portal server group, with the new destination port 8080.
In the topology shown, the following configurations are entered on the controller and external captive-portal
servers:
ESI server configuration on the controller
z External captive-portal server 1:
Name = external_cp1
Mode = NAT
Trusted IP address = 10.1.1.1
Alternate destination port = 8080
z External captive-portal server 2:
Name = external_cp2
Mode = NAT
Trusted IP address = 10.1.1.2
z External captive-portal server 3:
Name = external_cp3
Mode = NAT
Trusted IP address = 10.1.1.3
Note: The external servers do not necessarily have to be on the subnet as the controller. The policy that redirects traffic to the
external servers for load balancing is routed to the external servers if they are on a different subnet.