How to share the Internet from one computer to another through a router?

Question

Computer networks

Hello!
There are:
1) two MacBook laptops with Mac OS X Lion 10.7.5 installed
2) Zyxel Keenetic Giga router (first generation, firmware V2.04[USD.0]B3-1)
3) USB modem of one of the operators with 3G- Internet
Due to the fact that the USB modem indecently often falls off when working on Zyxel (it works fine on a laptop), the idea came up to use this USB modem connected to one of the laptops, and distribute it to other devices using a router.
The laptop on which it is planned to use the connected USB modem can communicate with the router both via Wi-Fi and via Ethernet.
What actions need to be taken in order to realize the plan?

Answer 1

Share the connection in the properties of the adapter (modem), and register the PC address as the gateway address of the rest, who will receive the Internet works through lan / if you register the gateway IP PC in the router, then the second com can receive the Internet via wifi? but in this version it will not be available locally