Touring the digital through type

Tag: privacy advocate

Analysis: ipoque, DPI, and Network Neutrality

netneutralityrallyottawaGerman Deep Packet Inspection (DPI) manufacturer, ipoque, has produced a white paper titled “Deep Packet Inspection: Technology, Applications & Network Neutrality.” In it, the company distinguishes between DPI as a technology and possible applications of the technology in a social environment. After this discussion they provide a differentiated ‘tiering’ of various bandwidth management impacts on network neutrality. In this post I offer a summary and comment of the white paper, and ultimately wonder whether or not there is an effective theoretical model, grounded in empirical study, to frame or characterize network neutrality advocates.

The first thing that ipoque does is try and deflate the typically heard ‘DPI analysis = opening a sealed envelop’ analogy, and argue that it is better to see packets as postcards, where DPI analysis involves looking for particular keywords or characters. In this analysis, because the technology cannot know of the meaning of what is being searched for, the DPI appliances cannot be said to violate one’s privacy given the technology’s lack of contextual awareness. I’ve made a similar kind of argument, that contextual meaning escapes DPI appliances (though along different lines) in a paper that I presented earlier this year titled “Moving Across the Internet: Code-Bodies, Code-Corpses, and Network Architecture,” though I think that its important to recognize a difference between a machine understandingsomething itself versus flagging particular words and symbols for a human operator to review. Ubiquitous, “non-aware,” machine surveillance can have very real effects where a human is alerted to communications – its something of a misnomer to say that privacy isn’t infringed simply because the machine doesn’t know what it’s doing. We ban and regulate all kinds of technologies because of what they can be used for rather than because the technology itself is inherently bad (e.g. wiretaps).
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Draft: What’s Driving Deep Packet Inspection in Canada?

routingpacketsFor the past few weeks I’ve been working away on a paper that tries to bring together some of the CRTC filings that I’ve been reading for the past few months. This is a slightly revised and updated version of a paper that I presented to the Infoscape research lab recently. Many thanks to Fenwick Mckelvey for taking the lead to organize that, and also to Mark Goldberg for inviting me to the Canadian Telecom Summit, where I gained an appreciation for some of the issues and discussions that Canadian ISPs are presently engaged in.


Canadian ISPs are developing contemporary netscapes of power. Such developments are evidenced by ISPs categorizing, and discriminating against, particular uses of the Internet. Simultaneously, ISPs are disempowering citizens by refusing to disclose the technical information needed to meaningfully contribute to network-topology and packet discrimination discussions. Such power relationships become stridently manifest when observing Canadian public and regulatory discourse about a relatively new form of network management technology, deep packet inspection. Given the development of these netscapes, and Canadian ISPs’ general unwillingness to transparently disclose the technologies used to manage their networks, privacy advocates concerned about deep packet networking appliances abilities to discriminate between data traffic should lean towards adopting a ‘fundamentalist’, rather than a ‘pragmatic’, attitude concerning these appliances. Such a position will help privacy advocates resist the temptation of falling prey to case-by-case analyses that threaten to obfuscate these device’s full (and secretive) potentialities.

Full paper available for download here. Comments are welcome; either leave them here on the blog, or fire something to the email address listed on the first page of the paper.