Thanks for your replay.

Actually i've a linux firewall with public ip, and my webserver is running on private ip so to access my webserver from outside i've inserted rule for port forwarding in linux iptables, so when it is ok when any query comes from internet of 80 for my webserver but if i try to access my site from my firewall machine it does not forward it to my webserver and consider it as local query.

Regards
Asim.