The Sun Java System Web Server provides the following default message when access is denied: “FORBIDDEN. Your client is not allowed access to the restricted object.” You can choose to show a different response when access is denied. You can also create a different message for each access control object.
Click the Response When Denied link from the ACL page.
Select Respond With the Following File in the lower frame.
Enter the path to the absolute URL or a relative URI and click update.
Make sure users have access to the URL or URI they are redirected to.
Click Submit in the top frame to submit the access control rule.