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mydoghasworms
Asked: 2012-03-15 12:34:32 +0800 CST

Share ppp0 internet connection via wireless modem

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I have a wireless router / ADSL modem and a 3G card that I use to connect to the internet over PPP.

I want to be able to share my internet connection (ppp0) to my laptop via the wireless router. So my setup looks like this:

Desktop:

internet <=(ppp0)= desktop =(eth0)=> ADSL router

Now from my laptop, I want to connect to my ADSL router (which has built-in DHCP, not sure if that is a problem), so that I can use the internet connection on the desktop.

laptop =(wlan0)=> ADSL router => desktop => internet

Hope this makes sense.

networking internet-connection internet

1 Answers

  1. Best Answer

    Without getting into the technicalities of it, you will have to disable the routing and DHCP of your ADSL modem, and make sure the wireless is bridged. So there is work to be done on the router first. You basically have to turn it into a dumb AP. Once you do that, you can enable DHCP and routing on the ETH0 adapter so that those that connect to the AP can receive an IP and route out the ppp0 interface. Hope you are comfortable with editing the /etc/* in a CLI based text editor cuz there is not a simple GUI fix for it.

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