Hi! im new here, well im trying to set up a web server with my billion 5200 adsl router, i test with no-ip.com and dyndns.com with (this comes with the router) and in two cases the domain answer the ping command, but wen i try to see by web mydomain.dyndns.com my router answer (popup the login page for setup the router) and is the same if y try with telnet command; i make the rules for port forward (start at 80 port, end 80 port) but in all cases answer the router (my iis works ok in localhost), how i can do for the router only answer for the internal network?.
Thanks in advance

Not sure how it might be setup on your router, but on my linksys it's done through UPnP, just need to setup the NAT address you want http connections on port 80 to be forwarded to.

mmm UPnP? i´ll try .. but in some forums talk about ACL rules..last night i move some there and i cant conect to my router from the LAN, well still it doesn´t work.