Hardware LoadBalancer response port issue

Hi All,    I have configured the DMZ apps node with Hardware load-balancer. When accessing application using load-balancer URL, the response port is coming as 8000 instead of 80.
All the context file values are updated as per document  and autoconfig was ran. Still the response port is not coming as 80 and fails with 'Network timeout error'.
Kindly provide some pointers for this issue.

Thanks,
Karthik C.