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1·The URL to redirect to in case of authentication failure.

验证失败则重定向到该 URL。

2·Authentication failure URL specifies the page the user sees if authentication fails.

Authentication failure URL指定了身份验证失败情况下用户看到的页面。

3·Security authentication failure rate, To configure the number of allowable unsuccessful login attempts.

安全认证失败速率，指定不成功的登录速率。

4·In your own applications, you might consider clearing the username and password when failure occurs because of authentication and adding an error message to the screen.

在我们自己的应用程序中，可以考虑在发生认证失败的情况时清除用户名和密码，并向屏幕上添加一条错误消息。

5·Therefore, administrators do not need to do any extra work during a system failure to failover Kerberos authentication service to the backup server.

因此在系统失败时，管理员不需要做额外工作就可以将Kerberos身份验证服务故障转移到备份服务器。

6·Besides, it can also lighten the burden of authentication server and avoid a single point of failure to a certain extent.

同时还可以减轻认证服务器的负担，在一定程度上防止单一故障点的存在。