该请求需要用户验证。
这些产品也提供了有增值作用（如用户验证）的安全应用入口。
Such products also provide secure application gateways that add value, such as user authentication.
通过密码命令为用户设置密码，然后验证登录。
Set the password for the user using the password command and verify login.
立即验证还可帮助用户解决问题。
Immediate validation can also help the user address the problem.
示例场景是一个基本用户身份验证流，如图1 所示。
The sample scenario is a basic user authentication flow, as shown in Figure 1.
身份验证过程对用户是透明的。
AS_REQ是初始用户身份验证请求。
验证网络用户却有其人将需要使用别的办法。
A new way to verify that Internet users are indeed human will then be needed.
在验证用户时口令也很重要。
Passwords are also very important when authenticating users.
其他用户ID或口令会造成来自验证服务的错误。
Any other user ID or password will result in an error from the authorization service.
现在WeatherReporter应用程序就可以搜集和验证用户输入了。
Now the Weather Reporter application can collect and verify user input.
使用lsuser命令，验证已经创建了该用户。
Use the lsuser command to verify that the user has been created.
用于验证用户有权执行该任务的方法
A way to verify that the user has the right to perform the task
如果auth _ type属性是UNIX_AUTH，那么在客户端系统对用户进行身份验证。
If the auth_type attribute is UNIX_AUTH, then the user is authenticated at the client system.
如果把pam_deny . so替换为pam_unix . so，就应用标准的身份验证方法(输入用户名和密码)。
With pam_unix.so, the standard authentication method (enter a user name and password) will be applied.
提交正确的密码(所需的身份验证信息是用户应该知道的某种信息)。
Submit the correct password (where the authentication information required is something that one should know).
从用户概要(如果请求是由经过身份验证的用户发出的)。
From the user profile, if the request is made by an authenticated user.
在验证用户身份时，需要确认用户的身份的确如他们所声称的那样。
When you authenticate users, you confirm that they really are who they claim to be.
基本上只要用户需要输入数据，就需要对这个数据进行验证。
Basically, in any scenario where a user must enter data, that data must be validated.
必须有一种机制能够支持惟一的用户标识和身份验证。
There must be a mechanism in place to support unique user identification and authentication.
在大多数应用程序中，身份验证是通过用户名和密码的组合完成的。
In most applications, authentication is done through a combination of a user name and password.
这个概要文件现在已经准备好可以使用了，所有用户都已经被映射和验证过。
The profile is now ready to use, and all users have been mapped and verified.
在每一层中都存在一个用户身份验证难题。
当这些操作失败时，提示用户输入身份验证密码。
When these fail, the user is finally prompted for a password as authentication.
前一节介绍的身份验证方法是用户级安全措施。
The authentication described in the previous section is user-level security.
然而，用户不必担心如何进行身份验证。
However, the users need not worry as to how they are authenticated.
把用户名和密码发送到身份验证服务。
身份验证的目的是要用户证明其身份。
The whole point of authentication is for the user to prove his or her identity.
一个非常简单的LoginModule可能会提示输入用户名和密码并对它们进行验证。
A very simple LoginModule may prompt for and verify a username and password.
因此，没有必要联系t witter以对此用户再次进行身份验证。
Therefore, there is no need to contact Twitter to authenticate this user again.
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