Can't access IIS 7 page externally

Hi All,

I've created a web page on IIS 7 that can be accessed on LAN but no via WAN. I've successfully created the NAT rule to forward the requisitions to my IIS server and made all Firewall necessary configuration.

I'm using an analys tool called Wireshark that shows that when I type http://myexternalipaddress from a different network the package is reaching my FW and it's forwarding to my IIS server on the port especied. Even seeing it happen the page can't not be opened externally (it gives time out and I already increased the time out settings).

Any idea?!?