WebSEAL is a component of Tivoli Access Manager for e-business that provides an authentication and authorization mechanism to enable end-to-end Single Sign On (SSO) for HTTP based Web servers. One such Web server is WebSphere Application Server residing on z/OS. With the WebSEAL solution, the z/OS system can remain safely isolated from Internet traffic and threats. In this solution, WebSEAL acts as a reverse proxy (a proxy that lets users into a protected network as opposed to one that lets users out). The WebSEAL reverse proxy would likely be deployed in the DMZ or similar security zone. A client would be authenticated by WebSEAL via userID and password, and a token would be assigned and associated with the transaction for the remainder of the communication.
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