这是有意这样设置的：如果使用了身份验证代理，IBM Support Assistant将拦截HTTP 407响应，并显示弹出对话框，以便输入用户ID和密码。
This is intentional: if an authenticating proxy is being used, IBM Support Assistant will intercept the HTTP 407 response and display a pop-up dialog box so you can enter your user ID and password.
不过，密码难以记忆，不易被窃取或者被拦截。
But passwords can be difficult to remember, stolen or intercepted.
US B端口拦截器是一种小型便携的软件工具，使您能够阻止US B端口访问未经授权的用户，正如其名称所暗示的，通过用密码保护它。
USB port Blocker is a small-sized and portable software utility that enables you to block USB port access to unauthorized users, as the name implies, by protecting it with a password.
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