Trust Association Interceptor (TAI)
Web proxy authentication servers like WebSEAL and SiteMinder can be used to perform authentication for WebSphere Application Server.
A trusted relationship between WAS and WebSEAL or SiteMinder is established by using a specific Trust Association Interceptor (TAI), which enables the integration of third party security servers with WAS.
Trust Association Interceptor is an Interface provided by WebSphere Application Server. This interface must be implemented for the specific Web proxy servers by the vendor alone or in conjunction with IBM. The implementation of this interface determines the contract used between WebSphere Application Server and the proxy server to establish trust. In WebSphere Application Server V6 there is a new TAI Interface that has significantly enhanced features.
Note: We can also use the old TAI interface...
com.ibm.websphere.security.TrustAssociationInterceptorFor more information about the old version of TAI, refer to the IBM Redbook
WebSphere Security V5, SG24-6573.