rwhitby.net » NSLU2-Linux

Connecting a Treo650 to a Freecom DataTank 2

Rod Whitby — Sat, 22 Mar 2008 09:36:01 +0000

Install bluez2-utils from Optware
Install the following kernel modules: bluetooth, hci_usb, l2cap, bnep, rfcomm, hidp
Create /dev/rfcomm0 as follows:
mknod /dev/rfcomm0 c 216 0

Enable routing from ppp0 to eth1 (don’t do this if you use ppp for your internet connection):


/etc/init.d # diff -u routing.orig routing
--- routing.orig        Sat Mar 22 18:57:23 2008
+++ routing     Sat Mar 22 15:14:29 2008
@@ -37,6 +37,7 @@

        # lo & eth0 always accepted (also if WAN port IP not set)
        /sbin/iptables -A INPUT -i $INIF -j ACCEPT
+       /sbin/iptables -A INPUT -i ppp0 -j ACCEPT
        /sbin/iptables -A INPUT -i lo -j ACCEPT

        # get IP address from WAN port
@@ -150,6 +151,7 @@
          /sbin/iptables -A FORWARD -j TCPMSS -o $EXIF --clamp-mss-to-pmtu -p tcp --tcp-flags SYN,RST SYN
        fi
        /sbin/iptables -A FORWARD -i $EXIF -o $INIF -m state --state ESTABLISHED,RELATED -j ACCEPT
+       /sbin/iptables -A FORWARD -i $EXIF -o ppp0 -m state --state ESTABLISHED,RELATED -j ACCEPT

        grep -q ^proxy_server=checked /etc/master.conf
@@ -163,6 +165,7 @@
          fi
        else
          /sbin/iptables -A FORWARD -s $SUBNET -i $INIF -j ACCEPT
+         /sbin/iptables -A FORWARD -s $SUBNET -i ppp0 -j ACCEPT
        fi

        # port forwarding

Edit /etc/ppp/options as follows:
noauth crtscts lock local proxyarp ktune 192.168.1.XX:192.168.1.YY ms-dns 192.168.1.ZZ
(edit the last two lines to suit your network topology, the first IP address
is your gateway device, the second IP address will be assigned to the client,
and the third IP address is your DNS server)
Add the following line to /etc/dnsmasq.conf:
interface=eth0,ppp0

Five new NSLU2 firmware releases in five days

Rod Whitby — Mon, 31 Dec 2007 02:58:16 +0000

In the last five days, we have made five new NSLU2 firmware releases:

2007-12-31 – Unslung 6.10-beta Release
2007-12-30 – SlugOS 4.8-beta Release
2007-12-29 – OpenWrt/NSLU2 Kamikaze 7.09 Release
2007-12-28 – Angstrom/NSLU2 2007.12 Release
2007-12-27 – Debian/NSLU2 Stable 4.0r2 Release

All of these new releases are available at

http://www.slug-firmware.net/

See http://article.gmane.org/gmane.comp.misc.nslu2.linux/20610 for
an explanation of the pros and cons of each different firmware
distribution, and the installable packages available for each.

Thanks to everyone in the NSLU2-Linux, OpenWrt, Angstrom, OpenEmbedded
and Debian projects who contributed to these releases.

Remember, if you find any of the firmware or packages that the
NLSU2-Linux project provides useful, feel free to make a donation to
the project at

http://www.nslu2-linux.org/wiki/Main/Donate

We are currently in need of about $500 to buy a RAID controller card
and some disks for our autobuild machine to support all this new
firmware with up-to-date package feeds …

Setting the OpenMoko timezone

Rod Whitby — Sat, 01 Sep 2007 08:33:48 +0000

If you want to set the timezone on your phone correctly, do the following:

ipkg install tzdata
ipkg install your desired tzdata-* packages. For instance, I use “tzdata-australia“.
Enable your desired timezone by symlinking it to “/etc/localtime“. Adjust the following example command line for your locality.

ln -s /usr/share/zoneinfo/Australia/Adelaide /etc/localtime

The “date” command should now show the correct time for your timezone. If it is not correct, then install the “ntpclient” package, and use it to set your clock.

Note that this technique should work on any OpenEmbedded-based Linux distribution.

Replacing dropbear with openssh

Rod Whitby — Sat, 01 Sep 2007 05:57:05 +0000

I prefer to use OpenSSH rather than Dropbear on my devices. The main reason is to get sftp support (which is required by sshfs). Another reason is to get better support for agent forwarding (which is essential for bouncing from one machine to another without leaving your private keys all over the internet).

To do this on OpenMoko (or any other OpenEmbedded-based distribution for that matter, for instance SlugOS or Angstrom):

Edit /etc/init.d/dropbear by replacing “DROPBEAR_PORT=22” with “DROPBEAR_PORT=2222” (or any other unused port).
Run “ipkg install -force-depends openssh” to install openssh.
Make sure you have set a root password before rebooting (use “passwd” to set it).
Reboot (dropbear will restart on the new port, and openssh will start on the normal ssh port).
Check that openssh is now serving on port 22 by logging into the device over ssh.
Run “ipkg remove -force-depends dropbear” to remove dropbear.
Then run “ipkg install openssh-sftp” to install support for the sftp protocol which sshfs uses.

Connecting a Treo650 to an OpenEmbedded-based firmware distribution

Rod Whitby — Sat, 11 Aug 2007 09:29:14 +0000

The following should work for an NSLU2 running SlugOS or Angstrom, or a device running OpenMoko.

Install the required kernel modules for bluetooth

ipkg install kernel-module-hci-usb kernel-module-l2cap kernel-module-rfcomm
depmod -a
ipkg install bluez-utils

Edit /etc/default/bluetooth to enable hcid and dund.
Change the pin and host settings in /etc/bluetooth/hcid.conf, and make sure that the class is 0x3e0100 (not the default value, which is for a PDA like a Zaurus, not a “Computer” device like the Neo which can accept and route tcp/ip network connections coming in over dund or pand on the bluetooth network)
Reboot and test with ‘hciconfig’ with a bluetooth dongle plugged in.
Install the required kernel modules for ppp

ipkg install kernel-module-ppp-async kernel-module-bsd-comp kernel-module-ppp-deflate
depmod -a

ipkg install ppp

Edit /etc/ppp/options as follows:
noauth crtscts lock local proxyarp ktune 192.168.1.XX:192.168.1.YY ms-dns 192.168.1.ZZ
(edit the last two lines to suit your network topology, the first IP address
is your gateway device, the second IP address will be assigned to the client,
and the third IP address is your DNS server)

MokoSlug Custom Firmware for the NSLU2

Rod Whitby — Thu, 25 Jan 2007 23:27:05 +0000

The NSLU2 is a good low-cost companion server for the Neo 1973 (the initial hardware platform for OpenMoko). It has one 10/100 ethernet port, two USB 2.0 ports, and easily supports connectivity with the Neo via Bluetooth (using a low-cost USB Bluetooth dongle).

I am creating a MokoSlug firmware distribution for the NSLU2 for this purpose. It will be based on the Angstrom distribution, which is built using the OpenEmbedded build system (the same build system which is used for the OpenMoko software).

Like the SlugOS firmware distribution for the NSLU2, it will initially run from internal flash but will allow you to boot from an external USB disk or flash key if you need more storage for installation of additional software packages.