Because the Identity Server handles authentication, it must be configured for SSL before any of the other Access Manager components. You can then configure the Access Gateway to use SSL in its connections to the Identity Server, to the browsers, and to its Web servers.
SSL impacts the performance of Access Manager components. Instead of enabling Access Manager components for SSL, you can front the components with an SSL terminator or accelerator. The SSL terminator offloads the handling of the SSL traffic, and the Access Manager components can be configured to use HTTP. For some tips on using such a device, see Section 2.4, Using an SSL Terminator.