Polls

Is there an unsecured wireless network near you?
 
Wireless Repeater How-To

Introduction

A Wireless Repeater, also known as a Wireless Client Bridge, or Range Expander, is just a wireless client (like your laptop) which, at the same time, can also be an access point, independent of the SSID and type of encryption used.

This How-To provides step-by-step instructions for creating a Wireless Repeater appliance: a device that you can place anywhere and it will wirelessly repeat a signal, onto another wireless network (with or without security).

Architecturally the repeater connects to another wireless router as a client, getting a single IP address via DHCP. Effectively the SSID of the network you connect to, becomes your ISP. Therefore you (the client) will operate in your own IP address space, which is different from address space the repeater connects to.

For example: In a given neighborhood, there are 3 open access wireless networks, jojo, linksys and internetmad. The repeater automatically receives an IP address from jojo. Let's say jojo is using 192.168.1.0/24, and your DDWRT router receives the address 192.168.1.139. The repeater is configured to use 172.16.100.0/24. From your laptop, you associate with the SSID "repeater" and you receive the address 172.16.101.100 via DHCP. As far as your laptop is concerned you are talking to repeater. As far as repeater is concerned, its gateway is "jojo" and jojo probably has another gateway via cable modem or DSL.

Prerequisites

You need DD-WRT installed on your router:

Instructions

1. Install the latest DD-WRT release candidate (v24 or greater). Keep ethernet cable connected for these instructions (to have connectivity across wireless network changes).

NOTE WRT54GS v4 and WRT54GL- Will need to be flashed with the MINI GENERIC bin 1st. Otherwise you will brick the router and have to tftp the Linksys bin to recover. Windows, use Internet Explorer as Firefox 2.0.0.4 does not handle the new DD-Wrt v24beta interface well.

screen-grab-12. Go to tab "Setup", sub-tab "Basic Setup":

  • Change "local IP address" to a unique subnet (different than device you wish to repeat), such as 192.168.69.1.
  • Save settings.