The background and environment:
1. WIndows Server 2008
2. ASUS RT-N13U router
3. Public IP incoming via PPPoe
4. FileZilla as FTP server
5. Web-Server on HyperV on Main server 2008
All is working fine. Internet connection working fine. I can access any site from all workstations and server.
Web server is functioning fine from within the LAN.
domain name resolves correctly to public ip when ping from inside the LAN and site opens fine from the LAN.
Problem is from the WAN. I cannot ping the domain nor public ip from the internet (WAN)
I assume this is a routing problem but cannot find the problem.