How can I set up routing?

Question

Computer networks

Hello,
How can I configure the TP-link wr841n router to route three clients if wan is designed for one specific computer with binding to the poppy address and authorization (either through a special key or through the browser where the login and password are entered).
Now the provider company offers, in addition to their space prices, to pay extra and they supposedly put me a wifi point for my phone. I concluded that authorization can take place on the router itself and access will already be open to clients.
Please help, how can I set this up? Thank you.

Answer 1

Clone to the wan interface of the mac router of the attached computer. If necessary, edit the TTL. It is possible that the standard firmware does not know how, then reflash to openwrt / ddwrt / etc.
Authorization must be dealt with separately and more technically. What is a key, how is authorization established, what is it tied to.

Answer 2

What prevents you from distributing the grid from a computer that has passed authorization, configuring it as a proxy / connecting a router to it (underline as necessary), plugging in another network card. If you really need WiFi so much, then find information on Virtual WiFi, for example, on Habré .
At least the warranty on the router will not be lost when changing the firmware.
I was able to flash my TL841ND back to my native one only via rs232 (not anyhow) by opening the device, but that's a completely different story :)