AS_REQ is the initial user authentication request.
AS_REQ是初始用户身份验证请求。
The sample scenario is a basic user authentication flow, as shown in Figure 1.
示例场景是一个基本用户身份验证流，如图 1 所示。
User Authentication is one of the important parts in network security technology.
身份认证是网络安全技术的一个重要组成部分。
Such products also provide secure application gateways that add value, such as user authentication.
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。
As the primacy safeguard of network security and information security, user authentication is very important.
用户身份认证作为网络安全和信息安全的第一道屏障，有着非常重要的作用。
Log in to enter credentials for authentication and authorization as a super user.
登录以作为超级用户输入认证和授权的凭证。
On successful authentication, a secure session is established with the user.
成功认证后，同用户的安全会话就被确立了。
With pam_unix.so, the standard authentication method (enter a user name and password) will be applied.
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)。
There must be a mechanism in place to support unique user identification and authentication.
必须有一种机制能够支持惟一的用户标识和身份验证。
In most applications, authentication is done through a combination of a user name and password.
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。
The authentication described in the previous section is user-level security.
前一节介绍的身份验证方法是用户级安全措施。
When these fail, the user is finally prompted for a password as authentication.
当这些操作失败时，提示用户输入身份验证密码。
The whole point of authentication is for the user to prove his or her identity.
身份验证的目的是要用户证明其身份。
A remote access dial in user service (RADIUS) authentication, authorization and account system is constructed.
构建了基于远程访问拨号接入用户服务(RADIUS)的认证、授权和计费系统。
At end of the user registration authentication protocol, a secret data has been established.
在进行用户登记认证的同时，用户与本地的访问网络之间还建立起一个秘密数据。
The user identity authentication is the first protective wall of network and information security.
用户身份认证是网络安全和信息安全的第一道屏障。
The user identity authentication is the first protective wall of network and information security.
用户身份认证是网络安全和信息安全的第一道屏障。
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