Directing traffic through multiple interfaces
I did a search, and perhaps I'm using the wrong terms, or this is not possible. Networking is not one of my greater strengths, and would appreciate if someone could point me to a tutorial for the following:
AT work, I have a PC connected to the company intranet, no internet connectivity. I boot the machine using a USB stick with a Debian live image. What I would like to do is boot to Debian and connect a USB cellular device to use the internet. Right now I can do this by toggling the devices on and off through GNOME's network manager when I need or want to use each.
What I would like, is if I visit a site in my browser on the company intranet (company.com) or by IP to be routed through the internal NIC, and all other traffic through my USB device. How would I go about doing this? I had checked out using route, but I am not all that familiar with it (like I said above).
Once again, if it can be done, if such a HOWTO exists a link would be greatly appreciated.