i have just configured a new sharepoint 2010 web application, but i can't seem to access the site collection from the internet.

i have extended the web application and when i try to access the site (portal.mydomain.net), it asks me for credentials, but once i enter them, i get an error page (internet explorer cannot display the webpage).

internally, the site collection works fine on port 8080, but i have set up a extender that uses port 80, so i just have to enter portal.mydomain.com to get access (that's what i want to do anyway).

i have set up port forwarding on my router to forward external domain (portal.mydomain.net) port 80 to internal ip and port 8080, but not sure if this is the correct setup.

any help would be greatly appreciated.

thanks,

shannon