[governance] DPI technology and regulatory move

[Izumi AIZU]

Ralf,

This is quite helpful. It may be far more than my brain capacity can
absorb ;-), but will do my best.

I plan to report back as we progress the study in Japan.

izumi

2010/1/8 Ralf Bendrath <bendrath at zedat.fu-berlin.de>:
> Izumi AIZU schrieb:
>
>> I got involved in a study group on DPI (Deep Packet Inspection)
>> and behavioral targeting advertising (and its policy issues) with ISP,
>> Ad agency layers, and our government as observer in Japan.
>
> Interesting. I thought DPI-based advertizing was almost dead after Phorm
> ceased its operations in the US and the UK.
>
>> Do you know how current DPI technology works in some detail?
>> One target is, of course, Phorm,
>
> There is a detailed analysis of the Phorm system from FIPR:
> Clayton, Richard. 2008. "The Phorm "Webwise" System." Cambridge:
> Cambridge University Computer Lab,
> http://www.lightbluetouchpaper.org/2008/04/04/the-phorm-webwise-system/.
>
> In general, DPI normally works with "configurable computing" (FPGA or
> CPLD) instead of von-Neumann-machines, because of the high speeds
> required for processing the data.
>
> The interesting parameters are:
> 1) speed of throughput (bandwidth to be inspected)
> 2) number of policy rules (malware patterns, prohibited protocols, ...)
> 3) search algorithm
> 4) depth of inspection (newer DPI gear allows for about 35 bytes depth,
> cheaper machines only look at layer-7 headers)
> 5) policy decisions (dropping, copying, re-directing, inserting,
> throttling, ... packets).
>
> While DPI has mostly been an extra box ISPs had to put into their
> network, it is nowadays converging with routers and switches. Search for
> "layer-7-switches" or "application-based routing".
>
> Further reading:
> <http://en.wikipedia.org/wiki/Deep_packet_inspection> gives a fairly
> good bibliography.
> Other sources are at https://www.dpacket.org/ and in my ISA conference
> paper from last year:
> <http://userpage.fu-berlin.de/~bendrath/Paper_Ralf-Bendrath_DPI_v1-5.pdf>.
>
> For the geeks: German DPI vendor ipoque has recently open-sourced its
> PACE DPI engine: <http://www.opendpi.org/>
> Xilinx also offers a full traffic management suite for their FPGA
> machines:
> <http://www.xilinx.com/support/documentation/white_papers/wp244.pdf>
>
> Hope this helps,
>
> Ralf
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-- 
                        >> Izumi Aizu <<

          Institute for InfoSocionomics, Tama University, Tokyo

           Institute for HyperNetwork Society, Oita,
                                  Japan
                                 * * * * *
           << Writing the Future of the History >>
                                www.anr.org
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