How to Run Two Routers Off One Cable Connection

By Jedadiah Casey

Routers designed for homes and small businesses use the concept of Network Address Translation to share a single network or Internet connection with multiple computers. These routers use private IP addresses on the internal network, which are not routable on the Internet. You can run two routers off one cable Internet connection by connecting the second router to the first router. This creates two separate private networks, both with Internet access.

Step 1

Power off all devices.

Step 2

Connect one end of an Ethernet cable to the Ethernet port on the cable modem.

Step 3

Power on the cable modem and wait approximately two minutes for the signal to synchronize.

Step 4

Connect the other end of the Ethernet cable to the "Internet" or "WAN" port on the first router.

Step 5

Power on the first router and wait approximately 30 seconds for the router to initialize.

Step 6

Connect one end of an Ethernet cable to one of the "LAN" ports on the first router.

Step 7

Connect the other end of the Ethernet cable to the "Internet" or "WAN" port on the second router.

Step 8

Power on the second router and wait approximately 30 seconds for it to initialize.

Tips & Warnings

  • Any computer or device connected to the first router will have Internet access but will be hidden by the second router, and vice versa.