AP OPENWRT PC

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</pre>
</pre>
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 +
=Installation=
 +
 +
Resulting images located in
 +
 +
=Configure OpenWrt=
 +
 +
After firmware starts goto shell and edit (use vi) some configuration files.
 +
 +
Edit network configuration <code>/etc/config/network</code>:<pre>config interface loopback
 +
        option ifname  lo
 +
        option proto    static
 +
        option ipaddr  127.0.0.1
 +
        option netmask  255.0.0.0
 +
 +
config interface wan
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        option ifname  eth0
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        option proto    static
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        option ipaddr  10.1.5.190
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        option netmask  255.255.0.0
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        option gateway  10.1.1.1
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        option dns      10.1.1.1
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config interface lan
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        option type    bridge
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        option ifname  "eth1 ath0"
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        option proto    static
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        option ipaddr  192.168.1.1
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        option netmask  255.255.255.0</code>
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 +
Edit wireless configuration <code>/etc/config/wireless</code>:<pre>config wifi-device  wifi0
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        option type    atheros
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        option channel  2
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config wifi-iface
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        option device  wifi0
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        option mode    ap
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        option ssid    home-home-openwrt
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        option encryption psk2
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        option key      0123456789ABCDEF</pre>
 +
Customize channel and key used for your case.
 +
 +
Change root password to enable ssh login: <pre>root@OpenWrt:~# passwd
 +
Changing password for root
 +
New password:
 +
Retype password:
 +
Password for root changed by root
 +
root@OpenWrt:~#</pre>
 +
 +
Allow <b>ssh</b> access to device from WAN port, <code>/etc/firewall.user</code>:<pre>[...]
 +
### Open port to WAN
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## -- This allows port 22 to be answered by (dropbear on) the router
 +
iptables -t nat -A prerouting_wan -p tcp --dport 22 -j ACCEPT
 +
iptables        -A input_wan      -p tcp --dport 22 -j ACCEPT
 +
[...]</pre>
 +
 +
Reboot system: <pre>root@OpenWrt:~# reboot</pre>

Revision as of 17:23, 12 July 2008

Contents

Hardware

For target platform we will use standard PC with D-link DWA-520G (Atheros chipset) WiFi board compatible with hostapd. We install 2 NIC (Intel Ethernet 100) to provide WAN and LAN interfaces.

Build OpenWrt

Downloading

I recommend download latest trunk version. Use subversion repo:
[verem@aipetry ~]$ svn checkout https://svn.openwrt.org/openwrt/trunk kamikaze
After downloading rename directory - append trunk version suffix. I my case:
mv kamikaze kamikaze-r11772

Building prerequisites

For build OpenWrt images i used FC8 (Fedora Core 8) distro. Make sure you have installed:

  • gcc
  • g++
  • bison
  • flex
  • ncurses-devel
  • zlib-devel

Configuration

Goto to source directory and configure:
[verem@dev-2 src]$ cd kamikaze-r11772
[verem@dev-2 kamikaze-r11772]$ make menuconfig

Select:

  • Target system x86 [2.6]
  • Check:
    • Select all packages by default
    • Advanced configuration options (for developers)
    • Buildsystem settings
    • Build the OpenWrt Image Builder
    • Image configuration
  • override built-in for Network:
    • hostapd
    • hostapd-mini
    • hostapd-utils
    • wpa-supplicant
  • override built-in for Kernel modules - Network Devices that will be used in your platform, in my case Intel(R) PRO/100+ cards.
  • override built-in for Kernel modules - Wireless Drivers that will be used in your platform, in my case Driver for Atheros wireless chipsets

After this changes made exit and confirm changes saving

Building

Start building process:
[verem@dev-2 kamikaze-r11772]$ make
++ mkdir -p /home/verem/src/kamikaze-r11772/staging_dir/toolchain-i386_gcc4.1.2
++ cd /home/verem/src/kamikaze-r11772/staging_dir/toolchain-i386_gcc4.1.2
++ mkdir -p bin lib include stamp

............

Installation

Resulting images located in

Configure OpenWrt

After firmware starts goto shell and edit (use vi) some configuration files.

Edit network configuration /etc/config/network:
config interface loopback
        option ifname   lo
        option proto    static
        option ipaddr   127.0.0.1
        option netmask  255.0.0.0

config interface wan
        option ifname   eth0
        option proto    static
        option ipaddr   10.1.5.190
        option netmask  255.255.0.0
        option gateway  10.1.1.1
        option dns      10.1.1.1

config interface lan
        option type     bridge
        option ifname   "eth1 ath0"
        option proto    static
        option ipaddr   192.168.1.1
        option netmask  255.255.255.0</code>

Edit wireless configuration <code>/etc/config/wireless</code>:<pre>config wifi-device  wifi0
        option type     atheros
        option channel  2

config wifi-iface
        option device   wifi0
        option mode     ap
        option ssid     home-home-openwrt
        option encryption psk2
        option key      0123456789ABCDEF

Customize channel and key used for your case.

Change root password to enable ssh login: 
root@OpenWrt:~# passwd
Changing password for root
New password:
Retype password:
Password for root changed by root
root@OpenWrt:~#
Allow ssh access to device from WAN port, /etc/firewall.user:
[...]
### Open port to WAN
## -- This allows port 22 to be answered by (dropbear on) the router
iptables -t nat -A prerouting_wan -p tcp --dport 22 -j ACCEPT
iptables        -A input_wan      -p tcp --dport 22 -j ACCEPT
[...]
Reboot system: 
root@OpenWrt:~# reboot
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