I'm a bit of a Cisco newbie and I'm hoping someone can offer me a little assistance. I have a Cisco 851W which I have configured using SDM express. Everything is working fine with the device, with one exception. I am apparently only able to open certain pinholes in NAT.
I want to foward ports 80, 443, and 3389 from the WAN interface to a server on my LAN. But after configuring the port forwarding, I am only able to access the server on port 80. Ports 443 and 3389 remain closed. Any thoughts on why that might be? Thanks for your assistance.