Http-Redirect (Captive Portal) - Alcatel-Lucent 7450 Configuration Manual

Filter Policy Advanced Topics

HTTP-redirect (Captive Portal)

Web redirection policies can be configured on SR OS routers/switches. The http redirection action
can block a customer's request from an intended recipient and force the customer to connect to the
service's portal server. 255 unique entries with http-redirect are allowed.
Traffic Flow
The following example provides a brief scenario of a customer connection with web redirection.
1. The customer gets an IP address using DHCP (if the customer is trying to set a static IP he
will be blocked by the anti-spoofing filter).
2. The customer tries to connect to a website.
3. The router intercepts the HTTP GET request and blocks it from the network
4. The router then sends the customer an HTTP 302 (service temporarily unavailable/moved).
The target URL should then include the customer's IP and MAC addresses as part of the por-
tal's URL.
5. The customer's web browser will then close the original connection and open a new connec-
tion to the web portal.
6. The web portal updates the ACL (directly or through SSC) to remove the redirection policy.
7. The customer connects to the original site.
Page 460 7450 ESS Router Configuration Guide