Each reverse proxy must have a unique IP address and port combination. If your Access Gateway has only one IP address, you must select unique port numbers for each additional reverse proxy that you create. You can configure Access Gateway to use multiple IP addresses. These addresses can be configured to use the same network interface card, or if you have installed multiple network cards, you can assign the IP addresses to different cards.
Access Gateway Appliance: To configure IP addresses and network interface cards, see Viewing and Modifying Adapter Settings.
Access Gateway Service: You need to use system utilities to configure network interface cards and new IP addresses. After they are configured, you can use the New IP option to make them available for Gateway Service configuration. See Adding a New IP Address to Access Gateway.
If you are creating more than one reverse proxy, you must select one to be used for authentication. By default, the first reverse proxy you create is assigned this task. Depending upon your Access Gateway configuration, you might want to set up one reverse proxy specifically for handling authentication. The authentication reverse proxy is also used for logout. If you have web applications that contain logout options, these options need to be redirected to the Logout URL of the authentication proxy.