It worked (with some fussing)
Since I am new I had to find the commands to remove the network manager, but ultimately I ran:
? sudo aptitude remove network-manager network-manager-gnome ?
But this left me without connectivity within the gnome desktop. So, on a hunch, I reinstalled the network manger with this
? sudo aptitude install network-manager ?
At any rate, I have connectivity restored within the desktop and I am able to connect to the server on the public domain/ip.
thanks very much!