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Saturday, January 01, 2011

Using old Wireless ADSL Modem as a DIY Access Point

2 comments :


My current home network configuration is using ISP supplied ADSL modem that comes without wireless. It connect to a cheap unmanaged switch through a crossover cable and distribute it to 2 PCs.



I also have a broken ADSL modem (Riger DB108-WL) that comes with wireless capability. The only thing is, the ADSL circuit is broken. So this is where this idea comes out. How to use the spare wireless circuit with my current network configuration. I thought it will be complicated but when I give a try, it was not that hard. Just a couple of simple steps will do.

The main idea are to;
  • give the wireless device a fix IP
  • turn it DHCP server off
  • hook it up to the existing switch using crossover cable
  • set the gateway IP pointing to the current ADSL modem.
I assume you already know how to browse the wireless device web management page. Riger DB108-WL default user:pass is tmadmin:tmadmin

Part 1, to make it easy, just reset the wireless device to factory default through the pinhole. Then hook it directly to your PC using standard network cable. Set its IP for example, my current ADSL modem is set to 192.168.100.1. So the wireless device IP should be set to the same network segment, let say 192.168.100.50. Next, turn of its DHCP server since we want to let the current ADSL modem to control the host distribution. Now save and reboot the wireless device.


Part 2, Now the IP of the wireless device has changed. Disconnect it from your PC and hook it to the switch with crossover cable. Hook your PC back to the switch. Now turn on your wireless device and browse to its web management page. Set the gateway so that it point to the current ADSL modem (in my case, 192.168.100.1).


Now the wireless device is converted to wireless access point and ready to accept wireless connection.


The best part of using this configuration is, you can turn off wireless independently without need to browse the web management page. Just turn the wireless device power off.

**update**

For DSL605EW, please refer to screenshots below.

2 comments :

Al Höpö said...

I have free Internet connection in my apartment. I am using Thomson/Alcatel speedtouch585 ADSL modem as AP since I had one available. I just configured modem to be a bridge, DHCP off and WLAN on with normal security settings allowing connections. Modem is connected to apartment building's network from one of its four ethernet ports and probably gets IP from building's DHCP. I just connect to my modem by WLAN and it shares the Internet connection.

Hannes said...

My current home network configuration is using ISP supplied ADSL modem that comes without wireless. It connect to a cheap unmanaged ... imodemadsl.blogspot.com