How can I protect my wireless network ? Well I found what NOT to use
1. Mac Filtering
Spoof the mac address in linux by ;
/etc/init.d/networking stop
ifconfig eth0 hw ether 00:01:02:03:04:08 <== desired mac :)
/etc/init.d/networking start
More info on other systems found here
2. WEP (Wireless Equivalent Privacy)
This method, as it seems was pretty weak from the begining. There's a step-by-step approach to cracking it here
Hmmm ... try kismet and airsnort ... I rest my case ;)
With these two gone, The Other alternatives AFAIK would be to;
1. Hide the SSID
2. Disable DHCP and assign static non-routable IPs
3. Use WPA instead of WEP
I found a good intro here, while googling, which gives a step by step guide to configure your router for security.