authentication - 访问具有额外身份验证的 WiFi 互联网

Question

我的大学分两步运行他们的 wifi 身份验证。首先您连接到 wifi 网络，然后当您打开网络浏览器时，您必须输入一些关于您自己的附加信息才能访问互联网。

1)大学系统有一些方法可以检测设备之前是否已经过身份验证(因此它不会每次都要求您提供凭据)，这是如何完成的？是通过MAC地址吗？

2) 假设我试图运行一个没有网络浏览器的家庭服务器。我怎样才能上网？我是否需要安装 Web 浏览器才能完成第二步身份验证？

Answer 1

您正在谈论的“两步”过程称为“俘虏门户”:

• http://en.wikipedia.org/wiki/Captive_portal

The captive portal technique forces an HTTP client on a network to see a special web page (usually for authentication purposes) before using the Internet normally. A captive portal turns a Web browser into an authentication device.[1] This is done by intercepting all packets, regardless of address or port, until the user opens a browser and tries to access the Internet. At that time the browser is redirected to a web page which may require authentication and/or payment, or simply display an acceptable use policy and require the user to agree. Captive portals are used at many Wi-Fi hotspots, and can be used to control wired access (e.g. apartment houses, hotel rooms, business centers, "open" Ethernet jacks) as well.