String around my finger
A 'blog to remember things I found.

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I work for NIS ITS Monash University Australia.

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• hardware 19
• linux 13
• media 24
• misc 21
• monash 18
• networks 33
• oss 1
• security 1
• software 17
• voip 37
• windows 3

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Linksys NSLU-2 (Network Storage Link for USB 2.0 Disk Drives)

A low-cost embedded Linux device that turns any USB hard drive into a NAS (network-attached storage) device.

It gets rave reviews and was hacked by Jim Buzbee to add NFS server, add iTunes server (mt-daapd), customise startup, and finally moved to Unslung.

Can obtain replacement firmware from NSLU2 Linux Unslung (stable) or OpenSlug (devel).

Then you can run other things on it like media streaming, Asterisk - as home PBX, etc, etc.

With an auto-spindown laptop drive or USB stick, a setup is very small, quiet, and uses a tiny amount of power.

It is now possible as per Slashdot to Install Debian Sarge.

You can also de-underclock it.

shopbot.com.au shows it is available from oztechnologies.com.au for $149.60 + $12.00 shipping.

[ /hardware | # ]

Australian ENUM Trial

ENUM is using the DNS to store data (indexed by reversed dotted-digit E.164 telephone-like numbers) that contains a collection of contact information.

The DNS resource records contain regular expression based rewrite rules that rewrite, then redirect or answer the query.

See RFC 3761 "The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM)" and RFC 2915 "The Naming Authority Pointer (NAPTR) DNS Resource Record". Example:

   $ORIGIN 3.8.0.0.6.9.2.3.6.1.4.4.e164.arpa.
     ;; order pref flags service regexp         replacement
      NAPTR 10 100 "u" "E2U+sip" "!^.*$!sip:info@example.com!" .
      NAPTR 10 101 "u" "E2U+h323" "!^.*$!h323:info@example.com!" .
      NAPTR 10 102 "u" "E2U+msg" "!^.*$!mailto:info@example.com!" .
  
   This describes that the domain 3.8.0.0.6.9.2.3.6.1.4.4.e164.arpa. is
   preferably contacted by SIP, secondly via H.323 for voice, and
   thirdly by SMTP for messaging.  

AARNet now run a ENUM Registrar Trial Service and are taking registrations in +615900xxxxx (a non-telphone number range).

I now have an ENUM, +61 590 000 007.

  $ dig NAPTR 7.0.0.0.0.0.0.9.5.1.6.e164.arpa
     ;; order pref flags service regexp                       replacement
     NAPTR 1 10 "u" "E2U+msg" "\"!^.*$!mailto:John.Mann_its.monash.edu.au!\"" .

I don't know of anything that uses this information yet.

[ /networks | # ]