GuruPlug Debian

Wireless

• PlugWiki:Setting_GuruPlug_to_be_a_wireless_Access_Point
• PlugForum:1648

Installation

• we need the uap8xxx.ko kernel module, and the uaputl setup utility (the latter shipped with the GuruPlug as /usr/bin/uaputl)
  • uses /lib/firmware/mrvl/helper_sd.bin, /lib/firmware/mrvl/sd8688_ap.bin (shipped with the GuruPlug)
• disable wireless client mode modules libertas_sdio.ko and libertas.ko
  • uses sd8688.bin, sd8688_helper.bin (found in /root/firmware; also in Debian package libertas-firmware)
• remove or disable call to /root/init_setup.sh from /etc/rc.local

Download

• guruplug-wl-1691.sh – the script (do not forget to chmod +x ...) with instructions (in the script)

Issues

• PlugForum:1648 – wireless access point module and user space setup utility (uaputl); modinfo uap8xxx.ko says «Marvell» and «GPL».. but where’s the source code for the uaputl?

Cleanup

• /etc/ifplugd/ifplugd.action – cleaned by dist-upgrade to squeeze
• removed usbmount, udhcpd, dbus and other stuff
• created new ssh keys
• /var/lib/dbus
• /var/log (/samba)
• removed all stuff from /etc/rc.local
• there’s some really nasty stuff in /etc/sudoers
• disable ipv6: blacklist ipv6 module in /etc/modprobe.d/backlist.conf

Debian

• http://bzed.de/posts/2010/05/installing_debian_on_the_guruplug_server_plus/ – installation instructions
• dist-upgrade to squeeze
• usb hdd standby → mine does it automatically
• localepurge
• dpkg-reconfigure -plow locales

Firewall & Router

• http://www.debian-administration.org/articles/23
• http://www.netfilter.org/documentation
• http://www.frozentux.net/iptables-tutorial/iptables-tutorial.html

Or you can use my firewall/routing script. It assumes two different and fully trusted networks (and interfaces) for the ethernet LAN and the wireless LAN, and a separate interface for the internet connection. It configures the firewall, the routing and NAT for this setup. See the script (comments) for details.

• flipfirewall-1582.sh
  • installation:
    • copy to /etc/init.d/flipfirewall,
    • chmod a+rx /etc/init.d/flipfirewall,
    • edit the configuration in the script (IF_EXT, IF_LAN, IF_WIR)
    • test with /etc/init.d/flipfirewall start
    • and activate: update-rc.d flipfirewall defaults

Compiling Stuff (Options)

• native Debian for ARM (e.g. on the Plug)
• cross-compilation using a toolchain from
  • the Embedded Linux Development Kit (ELDK), or from
  • the toolchain from EmbDebian (apt-get install emdebian-tools, emsetup --arch armel, arm-linux-gnueabi-gcc ...), or from
  • Dan Kegel's Crosstool