Hurricane h5200 modem/router

Question

i tried portforwarding using portforward.com guide. but the problem is my local
area network cannot see my servers using fqdn. other pc (internet,
public and other computers not connected to my network that doesnt pass
the modem/router) can see my servers.if i go to my fqdn on my local
area network i see the router config page. also other ports that are
being forwarded are not working in local areais there a tweak or config on the router/modem h5200?i need help anyone?