ACL Filter Policy Overview
498 Router Configuration Guide
Figure 22: 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 – The customer’s IP address.
• $MAC – The customer’s MAC address.
• $URL – The original requested URL.
• $SAP – The customer’s SAP.
• $SUB – The customer’s subscriber identification string”.
• $CID — A string that represents the circuit-id or interface-id of the subscriber host
(hexadecimal format).
• $RID — A string that represents the remote-id of the subscriber host (hexadecimal
format).
• $SAPDESC – A configurable string that represents the configured SAP description.
0972
Customer’s
Computer
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
NORMAL HTTP WITH PORTAL
REDIRECT TO ORIGINAL WEBSITE
NORMAL HTTP WITH ORIGINAL WEBSITE
SR OS
Router/Switch
Portal
Website
Original
Website
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