Chapter 17 Captive Portal; Overview - ZyXEL Communications NXC5200 User Manual

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17.1 Overview

A captive portal intercepts all network traffic, regardless of address or port, until
the user authenticates his or her connection, usually through a specifically
designated login Web page.
As an added security measure, the NXC contains captive portal functionality. This
means all web page requests can initially be redirected to a special web page that
requires you to authenticate your session. Once authentication is successful, you
can then connect to the rest of the network or Internet.
Typically, you often find captive portal pages in public hotspots such as
bookstores, coffee shops, and hotel rooms, to name a few; as soon as you
attempt to open a web page, the hotspot's AP reroutes your browser to a captive
portal page that prompts you to log in.
Figure 103 Captive Portal Example
The captive portal page only appears once per authentication session. Unless a
user idles out or closes the connection, he or she generally will not see it again
during the same session.
NXC5200 User's Guide
Captive Portal
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