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

• load OpenWrt buildroot-ng 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-jffs2-r4778.bin flash0.os
    CFE> reboot

• log into the AP
  • with serial console, just press enter
• configure network
  • WAN port defaults to 192.168.1.1, but can get a local address by running

    • udhcpc -i eth0

• install USB modules:

  • cd /tmp
    scp 192.168.0.4:/src/kamikaze6/buildroot-ng/openwrt/bin/packages/kmod-usb-core_2.6.17-brcm-1_mipsel.ipk .
    scp 192.168.0.4:/src/kamikaze6/buildroot-ng/openwrt/bin/packages/kmod-usb2_2.6.17-brcm-1_mipsel.ipk .
    scp 192.168.0.4:/src/kamikaze6/buildroot-ng/openwrt/bin/packages/kmod-zd1211_2.6.17+r69-brcm-1_mipsel.ipk .
    ipkg install kmod-usb-core_2.6.17-brcm-1_mipsel.ipk
    ipkg install kmod-usb2_2.6.17-brcm-1_mipsel.ipk
    ipkg install kmod-zd1211_2.6.17+r69-brcm-1_mipsel.ipk

  or more succinctly:

  • cd /tmp
    scp 192.168.0.4:/src/kamikaze6/buildroot-ng/openwrt/bin/packages/kmod-{usb-core_2.6.17,usb2_2.6.17,zd1211_2.6.17+r69}-brcm-1_mipsel.ipk .
    ipkg install *.ipk

• change root password

  • passwd

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

    • cd /etc/modules.d
      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
      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:

  • cat > /etc/config/network <<EOF
    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"
    EOF