这样，系统就能检查主体的身份以及资源的ACL了。如果找到匹配信息，就允许指定的访问。
Thus, the system can examine the subject's identities and the ACL of the resource, and if a match is found, permit the access specified.
如果你想能以系统管理员的身份登录，你可以这样做，首先，你需要检查一下“允许本地系统管理员登录”选项。
If you want to be able to log on as the system administrator you can do so here. First you need to check the check box labeled "Allow local system administrator login".
在这个方法中，通过身份验证的用户，被分配了系统的角色和检查，来验证有这个角色的用户可以执行这个方法。
In this approach, authenticated user has assigned roles and system checks and verifies that either a specific assigned role can perform the operation requested.
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