Cisco Cisco 4402 Wireless LAN Controller Technical Manual

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After you click Yes to proceed (or more precisely Continue to this website (not recommended)
for Firefox browser for example), or if the browser of the client does not display a security alert, the
web authentication system redirects the client to a login page, as shown in the image:
The default login page contains a Cisco logo and Cisco-specific text. You can choose to have the
web authentication system display one of these:
The default login page
A modified version of the default login page
A customized login page that you configure on an external web server
A customized login page that you download to the controller
When you enter a valid username and password on the web authentication login page and click
Submit, you are authenticated based upon the credentials submitted and a successful
authentication from the backend database (LDAP in this case). The web authentication system
then displays a successful login page and redirects the authenticated client to the requested URL.