Starting with this release, J2EE agents can be configured to use custom HTTP headers to identify the remote client IP address and host name. This client IP address is used to validate an Access Manager session or to evaluate applicable policies.
Benefit - Support for Client Identification Based on Custom HTTP Headers: This feature is specially useful in situations where a proxy server exists between the remote client and the agent-protected server. In such situations a problem occurs in that the client address information carried within the request is replaced by the address information of the proxy server. This address replacement adversely affects session validations and policy evaluations, which depend upon the correct address information. However, when proxy servers can be configured to send the actual client address information in separate headers, then J2EE agents in the 2.2 release can use that information. In summary, this feature allows agents to use the actual client address information in this type of deployment as if the request were never intercepted by an intermediate proxy server.