Linux WLAN Workgroup bridge

daletaylor · 02-15-2008, 12:13 PM

Hello,

Is it possible to create a WLAN workgroup bridge with Linux and a router?

What I'm trying to do is this:

have a machine with a WiFi NIC and a wired NIC (WLAN bridge)
the WiFi NIC connects to my WiFi network
the wired NIC connects to a wired router
the wired router connects some machines that do not have WiFi cards
have the machines without WiFi cards be able to access the Internet and other network ressources through the WLAN bridge

Is this possible? How can I do it?

Thank you very much!

Dale

MS3FGX · 02-15-2008, 05:20 PM

You would just need to setup iptables to route between the WLAN and wired interfaces, and then alternately setup DHCP for the clients (though it sounds like you might be handling all this in the router).

The following commands (placed into a boot script) should be enough to get basic functionality going:

Code:

iptables --table nat --append POSTROUTING --out-interface wlan0 -j MASQUERADE
iptables --append FORWARD --in-interface eth0 -j ACCEPT
echo 1 > /proc/sys/net/ipv4/ip_forward

That should share out the connection from your first WLAN device to your first Ethernet device, which sounds about right from your description.

daletaylor · 02-16-2008, 07:05 AM

Thank you very much for your reply!

I'll try it out and post my results.