Replacement Values for HTTP Modification Rule Elements
Alteon lets you optionally use predefined variables in HTTP modification rules. These variables represent dynamic values that are read from the actual traffic.
These variables can be used in conjunction with static text. For example:
External-IP-port:$VIP:$VIP_Port
Note: The $ character represents a variable. The string $$ represents the real $ character in the replacement value text.
 
Replacement Values for HTTP Modification Rule Elements 
Value
Description
$Blank
Used to remove the content of a field in an update rule.1
$Client_IP
The original client IP as it appears in the request from Alteon.
$Client_Port
The original client port as it appears in the request from Alteon.
$VIP_IP
The original destination IP as it appears in the request that arrives from Alteon.
$VIP_Port
The original destination port as it appears in the request from Alteon.
$Server_IP
The IP address of the server that was selected by Alteon for this session.
$Server_Port
The destination port to which traffic is forwarded when sent to the server.

1 Only valid with the replacement of status line text.