access server public ip from internet

I have configured Virtual IP (port forwading) on my fortigate firewall but still i cannot access my server from internet via its public ip. Here is my configuration 1. Inside the " root" vdom i created a virtual ip: Name: Server1 External Interface: WAN1 Type: Static NAT External IP: Public IP Mapped IP: Private IP Port Forwarding: <checked> External Service Port: 8080 Map to Port: 8080 2. Firewall Policy Source interface: WAN1 Source address: all Destination interface: Internal Destination address: Server1 Schedule: always Service: any Action: Accept I have also performed the following troubleshooting process: 1. From Fortinet firewall ping server private ip - successful! 2. From a workstation command prompt telnet <private ip> 8080 - successful (port 8080 of server is open) Can anyone help me point out what else is missing? Does a DNS server has something to do with this?