The MississippiNetworkRepeater is a NetgearWgt634u loaded with OpenWRT. It uses a HawkingHwu54g USB 802.11g radio as a client to any nearby www.personaltelco.net network and operates its native radio as a local coverage access point.

Building

To build one of the devices:

• load OpenWrt Kamikaze in a normal fashion, via serial console:

  • CFE> ifconfig eth0 -auto
    CFE> flash -noheader 192.168.0.5:wgt634u/wipe-1.img flash0.os
    CFE> flash -noheader -offset=3932160 192.168.0.5:wgt634u/wipe-2.img flash0.os
    CFE> flash -noheader 192.168.0.5:wgt634u/openwrt-wgt634u-2.6-squashfs-r3794.bin flash0.os
    CFE> reboot

• log into the AP
• install USB modules:

  • cd /tmp
    scp 192.168.0.4:/src/kamikaze4/trunk/openwrt/bin/packages/kmod-usb-core_2.6.16.7-brcm-1_mipsel.ipk .
    scp 192.168.0.4:/src/kamikaze4/trunk/openwrt/bin/packages/kmod-usb2_2.6.16.7-brcm-1_mipsel.ipk .
    scp 192.168.0.4:/src/kamikaze4/trunk/openwrt/bin/packages/kmod-zd1211_2.6.16.7+r69-brcm-1_mipsel.ipk .
    ipkg install kmod-usb-core_2.6.16.7-brcm-1_mipsel.ipk
    ipkg install kmod-usb2_2.6.16.7-brcm-1_mipsel.ipk
    ipkg install kmod-zd1211_2.6.16.7+r69-brcm-1_mipsel.ipk

• change root password

  • passwd

• modify /etc/modules.d
  • remove encryption modules from 20-madwifi

    • cd /etc/modules.d
      rm 20-madwifi
      cp /rom/etc/modules.d/20-madwifi .
      vi 20-madwifi

  • add a file for zd1211:

    • cat > /etc/modules.d/70-zd1211 <<EOF
      zd1211
      EOF

• modify /etc/init.d
  • add some lines to S20madwifi:

    • cd /etc/init.d
      rm S20madwifi
      cp /rom/etc/init.d/S20madwifi .
      cat >> S20madwifi <<EOF
      
      iwconfig ath0 essid www.personaltelco.net/repeater
      iwconfig ath0 channel 11
      EOF

  • remove S45firewall

    • rm /etc/init.d/S45firewall

  • add a file S90repeater:

    • cat > /etc/init.d/S90repeater <<EOF
      #!/bin/sh
      
      echo "Initializing Repeater"
      
      /sbin/ifconfig wlan0 up
      /usr/sbin/iwconfig wlan0 essid www.personaltelco.net
      while /usr/sbin/iwconfig wlan0 2>/dev/null | grep Access | awk '{ print $5 }' | grep 00:00:00:00:00:00 ; do sleep 1 ; done
      /sbin/udhcpc -i wlan0
      /usr/sbin/iptables -t nat -A POSTROUTING -o wlan0 -j MASQUERADE
      EOF
      chmod 755 /etc/init.d/S90repeater

  • Modify /etc/config/network to:

    • lan_ipaddr="192.168.3.1"
      wan_proto=none

Experimenting with OpenWrt buildroot-ng, we need something like this in /etc/config/network:

• config interface wan
          option ifname   eth0
          option proto    static
          option ipaddr   192.168.1.1
          option netmask  255.255.255.0
  
  config interface lan
          option type     "bridge"
          option ifname   "ath0 eth0.1 eth0.2 eth0.3 eth0.4"
          option proto    "static"
          option ipaddr   "192.168.3.1"
          option netmask  "255.255.255.0"
  
  config interface wlan
          option ifname   wlan0
          option proto    "none"