当你实现一个登录限制的时候，小心不要把那些不需要用户身份认证的功能也锁起来。
When you implement a log-in barrier, be careful that you don’t lock away features that don’t really need user identification.
除了存储用户信息外，在LDAP中定义用户还可以使一些可选特性得到启用，例如限制登录的数量。
In addition to storing user information, defining users in LDAP allows for such optional features as limiting the number of logins.
有了可用的登录和注销框架之后，限制对某个操作的访问就非常简单了。
Once you have a working login and logout framework, it's extremely easy to restrict access to certain actions.
它负责生成当用户试图访问受限制的操作时显示的登录表单。
It is responsible for generating the login form that users will see when they try to access a restricted action.
在此代码中，根据用户的角色限制对特定url的访问，并指出对未登录用户使用的身份验证机制。
In this code, we are limiting access to a certain URL based on a given user's role and telling which authentication mechanism to use for someone who is not logged in.
如果不能限制登录需要使用的资源，那么至少可以限制系统访问原则的数量。
If you can't restrict the resources a login gets to use, then you can at least restrict the number of principals accessing the system.
在用户foo登录到AIX中之后，运行ulimit命令，以验证他的文件描述符限制是否设置为1500。
After user foo logs in to AIX, run the ulimit command to verify that his file descriptor limit is set to 1500.
在用户foo登录aix之后，运行ulimit命令以验证他的文件描述符限制是否设置为1000。
After user foo logs in to AIX, run the limit command to verify that his file descriptor limit is set to 1000.
相反，USER的每次登录都通过 chroot() 限制在同一个目录（/share/USER/root）中。
Rather, each of USER's logins are chroot()-ed under the same directory, /share/USER/root.
要基于用户登录信息限制用户只能检索特定数据，可以在QuerySubject过滤器中使用以下表达式。
To allow a user to retrieve only specific data based on their logon information, we can use the following expression in the Query Subject filter.
年幼的儿童也许会隐瞒自己的年龄到去登录这些站点，像Facebook有严格的年龄限制O'Keeffe说。
Younger children may try to lie about their age to get on to sites, like Facebook, that have strict age limits, said O'Keeffe.
用户：限制登录用户。
另一个缺点是HTTP身份验证没有限制如何建立登录名和密码，它只控制如何使用登录名和密码。
One other weakness is that HTTP authentication makes no provision for how to establish the name and password used for a login, only for how to use them once they have been created.
其安全模型与本地模型完全兼容，但限制于标准的SQL认证与登录上。
The security model is 100% compatible with on-premise model but is limited to standard SQL authentication and logins.
每个数据库是有大小限制的，目前为5 - 10Gb，同时每个数据库拥有一个或多个登录帐号(SQL用户)。
Each database is limited in size, currently, the limit is 5-10 Gb. Each database has one or more logins (SQL users).
您将理解到如何根据User是否登录启用登录、限制用户行为，甚至根据User的角色添加一些授权。
You'll learn how to enable logins, limit activity based on whether or not the User is logged in, and even add in some authorization based on the User's role.
然后，为这个用户账户设置密码，清除所有密码限制标志(这意味着用户foxtrot在登录时不会提示他更改密码)。
The password is then set on the account clearing all password restrict flags for the user (that means user foxtrot will not be prompted to change their password upon login).
为限制用户只能查询与他们的登录帐户相关的信息，我们定义了以下Query Filter(图11)。
Allowing users to query information only related to their logon account, we define the following query Filter: (Figure 11).
设定服务器登录时间限制、检测非法访问。
登录失败：用户帐户限制。可能的原因是不允许空白密码，登录时间限制，或限制政策已被强迫。
Logon failure: user account restriction. Possible reasons are blank passwords not allowed, logon hour restrictions, or a policy restriction has been enforced.
不同权限的用户登录后，系统对该用户可使用的功能有一定的限制。
Access to different users log in, users can use the system features a certain limit.
这会将这些动作方法默认限制到已认证用户，但又能允许未认证用户登录到应用程序。
This restricts action methods to authenticated users by default but allows unauthenticated users to log in to the application.
我有一个网站，在其中用户登录使用窗体身份验证，在其中我想限制对文件的访问特定文件夹某些用户。
I have a site, into which users log in using forms authentication, in which I want to restrict access to files in a particular folder to certain users.
可能的原因包括不允许空密码，登录时间限制，或强制的策略限制。
Possible reasons are blank passwords not allowed, logon hour restrictions, or a policy restriction has been enforced.
它配备了一个内置的密码管理器存储资源有限制的访问你的网络登录。
It comes with a built-in password manager to store your network logins for resources with restricted access.
成功登录进完整界面后，我们认定您就是此邮箱的真实主人，即可以完全操作邮箱，不受限制。
After you sign in to the complete interface, we identify you as the real owner of the mailbox; then, you can operate the mailbox freely without any restriction.
登录失败：用户帐户限制。
登录失败：违反帐户登录时间限制。
登录失败：违反帐户登录时间限制。
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