I'm trying to learn some Linux, so I've got Ubuntu installed on an old Dell Mini 10v. That seems to be working well.
The problem is trying to get SSH access over the internet to it. I've got a Comcast/Xfinity SMCD3GNV (Cable modem, wireless access point, router, phone) along with the
Asus RT-N66U wireless router. The SMCD3GNV has the public IP on the WAN interface and a LAN interface IP of 10.0.0.1. I can login to it and make changes.
My RT-N66U gets a 10.0.0.2 address from the SMCD3GNV on its WAN port. I've got it configured to have the 192.168.1.1 address on the LAN interface. My clients connect to the RT-N66U - including the Ubuntu box.
I've done some research and apparently I want my SMCD3GNV to be in bridge mode. I called Comcast and they said they put it in bridge mode. I'm not convinced it is actually in bridge mode. When they put it in bridge mode, the WiFi light should stay off according to one article I read. Unfortunately, it occasionally blinks and the admin web page has an icon that is green, but the mouse-over says "Status: Not Connected ; 0 computers connected."
I've tried all sorts of tom-foolery with the port forwarding, DMZ, static addresses, etc. I've tried to take the Asus out the mix by plugging the Ubuntu box into the SMCD3GNV and enable port forwarding to it. Still no joy.
Per
this post, if you go into debug mode and enter this: $("#pageForm1").show(); at the console, you can see the Bridge Mode button.
I was going to work on it some more last night, but the storms knocked our cable out. It just was not meant to be. Maybe today or tomorrow or the next day...