Client IP addresses in HTTP headers (–r)

The –r junction option allows you to insert client IP address information into the HTTP headers of requests destined for junctioned application servers. The HTTP header information enables applications on junctioned third-party servers to perform actions based on this IP address information.

HTTP header information must be transformed by the back-end server to environment variable format for use by a service on the back-end server. Header information is transformed into a CGI environment variable format by replacing all dashes (-) with underscores (_) and prepending "HTTP" to the beginning of the string. The value of the HTTP header becomes the value of the new environment variable.

HTTP Header Field specific to Security Access Manager	CGI Environment Variable Equivalent	Description
iv-remote-address	HTTP_IV_REMOTE_ADDRESS	The IP address of the client. This value could also represent the IP address of a proxy server or a network address translator (NAT).
iv-remote-address-ipv6	HTTP_IV_REMOTE_ADDRESS_IPV6	The IP address of the client in IPv6 format.

The –r option specifies that the IP address of the incoming request be sent to the back-end application server. The option is expressed without any arguments.

The –r option is also supported on virtual host junctions.