一旦登录进去，用户必须具有对应用的任意部分的访问权，而无需在单次访问期间再登录一次(除非他们已注销了)。
Once logged in, users must have access to any part of the application without having to log in again during a single visit (unless they log off).
单独的门户用户不能访问，但是单ldap用户标识能够用于访问所有的会话bean。
Individual portal users do not have access, but a single LDAP user id can be used to access all the session beans.
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