SAP Webdispatcher does not resolve the client IP

Hi, We have developed an application in portal to get the client IP & the

computer name. The issue is SAP Webdispatcher does not resolve the client IP.

The log on the portal j2ee server always gets the IP address of SAP Web

dispatcher instead of the clients

But if the clients connect to the URL of the portal servers directly, the

portal servers are able to capture it

The issues happens when the client browser uses the web dispatcher URL

Any idea?

Thanks in advance