J2EE Users, Realms, and Groups
A J2EE user is similar to an operating system user. Typically, both types of users represent people. However, these two types of users are not the same. The J2EE authentication service has no knowledge of the user name and password you provide when you log on to the operating system. The J2EE authentication service is not connected to the security mechanism of the operating system. The two security services manage users that belong to different realms.
A realm is a collection of users that are controlled by the same authentication policy. The J2EE authentication service governs users in two realms: certificate and default.
Certificates are used with the HTTPS protocol to authenticate Web browser clients. To verify ...
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