gorn.ch

So here is what I wanted to prevent a cable between our cablecom connection, where our first router is located and our office.

    +---------+                                   +--------------+
    | OpenWRT |     <--- WPA secured WiFi --->    | Existing     |
    | bridge  |                                   | access point | -- (DHCP server)
    +---------+                                   +--------------+
     |   |   |
     PC  PC  PC

This graphic and most of the configs are from http://wiki.openwrt.org/WirelessBridgeWithWPAHowto I just changed it to match WPA1 and my WRT54g. This Script will turn your router into a wireless bridge, but with an IP on the LAN and on the wireless side assigned so you can still configure it.

#Remove unused services:
rm /etc/init.d/S45firewall
rm /etc/init.d/S50dnsmasq
cp -f /rom/etc/init.d/S40network /etc/init.d/S40network
sed -i "/ifup wan/d" /etc/init.d/S40network

#Configure wifi:
ipkg install nas
ipkg install wl
nvram set wl0_radio=1
nvram set wl0_infra=1
nvram set wl0_mode=wet
nvram set wl0_ssid=ebiwireless
nvram set wl0_akm=psk
nvram set wl0_crypto=tkip
nvram set wl0_wpa_psk=fsckingunsecure

#Configure the interfaces:
nvram unset wan_ifname
nvram set wan_proto=none
nvram set lan_ifname=br0
nvram set lan_ifnames="vlan0 eth1"
nvram set lan_ipaddr=192.168.2.253
nvram set wifi_ifname=eth1
nvram set wifi_proto=static
nvram set wifi_ipaddr=192.168.2.252
nvram unset vlan1ports
nvram unset vlan1hwname
nvram set vlan0ports="4 3 2 1 0 5*"

#Save that stuff and reboot
nvram commit
reboot