Alcatel-Lucent 7450 ESS Series, Configuration Manual, Page: 351 / 540

Filter Policies
7450 ESS OS Router Configuration Guide Page 351
Figure 14: Web Redirect Traffic Flow
Starred entries (*) are items the router performs masquerading as the destination, regardless of the
destination IP address or type of service.
The following displays information that can optionally be added as variables in the portal URL
(http-redirect url):
• $IP – Customer’s IP address
• $MAC – Customer’s MAC address
• $URL – Original requested URL
• $SAP – Customer’s SAP
• $SUB – Customer’s subscriber identification string”
Note that the subscriber identification string is available only when used with subscriber
management. Refer to the subscriber management section of the SROS Triple Play Guide and the
SR OS Router Configuration Guide.
Since most web sites are accessed using the domain name the router allows either DNS queries or
responds to DNS with the portal’s IP address.
CUSTOMER’S COMPUTER SR/ESS PORTAL WEBSITE ORIGINAL WEBSITE
X>HTTP TCP SYN
X>HTTP TCP SYN ACK*
X>HTTP TCP ACK
HTTP GET
HTTP>X TCP ACK*
HTTP 302 (moved)*
X>HTTP TCP FIN ACK
HTTP>X TCP FIN ACK*
UPDATE POLICY
REDIRECT TO ORIGINAL WEBSITE
NORMAL HTTP WITH ORGINAL WEBSITE
NORMAL HTTP WITH PORTAL