I have a Linux Desktop (Fedora 18 or Ubuntu 14) on a wired LAN connected to the Internet. This Desktop has just 1 NIC which is connected to the LAN; it has no wifi card in it.
What hardware and software config choices do I have if I want to share this Desktop's Internet connection with my Android phone every now and then? The phone has bluetooth and wifi both, but no Internet connection of its own via 3G etc.
Some searching on the Net tells me that there are USB based bluetooth and wifi dongles which I could use to first get my Desktop to become wireless-capable. But will these dongles require any device drivers too for Linux, or will they work out of the box?
The other option is to get a wireless router, connect the Desktop to the router and the router to the LAN, and then try sharing the Internet connection with my phone. But my LAN is configured to allow Internet only to specific IP addresses (e.g. currently my Desktop and not the router) and I am not sure if a router's IP address can be changed to my desktop's original IP address. If it can be changed, then I could setup forwarding between my Desktop and the wireless router allowing the Desktop Internet access as before, plus share the Internet connection with my Android too.
Is there any other option?