WLC 2100 Guest Access external Web Authentication
To configure the WLC2100 for Guest Access with an external Web Authenticator it’s the same as the 4400, but with one difference :
You must configure an ACL to have access from the client to the external web server and bind this ACL to the WLAN.
The ACL components are :
Permit Webserver/24 0.0.0.0 TCP any any outbound
Permit 0.0.0.0 Webserver/24 TCP any any inbound