PDA

View Full Version : The Unintended Consequences of Rogers' Cable Internet Packet Shaping


BoogyMan
04-08-2007, 12:16 AM
I was afraid we would see this type of draconian activity by ISPs if P2P activity did not subside, and now it appears that my fears are being validated. If this successfully impedes P2P activity we can expect to see it spread causing problems with all encrypted data communications, not just P2P traffic.


Source: Link (http://www.michaelgeist.ca/content/view/1859/)

Thursday April 05, 2007
A day after the government confirmed its telephone deregulation plan over the objection of a Parliamentary committee and moved forward on plans to create a new, independent telecommunications consumer agency, it is worth pointing to a necessary complaint once that agency is operational (and to the CRTC in the meantime). For the past 18 months, it has been open secret that Rogers engages in packet shaping, conduct that limits the amount of available bandwidth for certain services such as peer-to-peer file sharing applications. Rogers denied the practice at first, but effectively acknowledged it in late 2005. Net neutrality advocates regularly point to traffic shaping as a concern since they fear that Rogers could limit bandwidth to competing content or services. In response to the packet shaping approach, many file sharing applications now employ encryption to make it difficult to detect the contents of data packets. This has led to a technical "cat and mouse" game, with Rogers now one of the only ISPs in the world to simply degrade encrypted traffic.

This raises many issues but I would like to focus on just two in this posting. First, not only is BitTorrent legal in Canada, but a growing percentage of the file swapping on BitTorrent clients is authorized. This includes a substantial amount of open source software development, independent films, and other large files. By reducing the bandwidth available for this application, Rogers is impairing the ability for Canadian artists to distribute their work and hampering the development of open source software in Canada. Moreover, this could lead to a situation where Rogers' own content is unfairly advantaged over competing content.

If that was not bad enough, there is now speculation at my own university that the packet shaping is making it very difficult for University of Ottawa users to use email applications from home. The University of Ottawa uses a persistent SSL encryption technology for the thousands of professors and students who access their email from off-campus. There is speculation that Rogers is mistakenly treating the email traffic as BitTorrent traffic, thereby creating noticeable slowdowns. Indeed, I have been advised that the University computer help desk has received a steady stream of complaints from Rogers customers about off-campus email service.

If true, this form of network interference - implemented with virtually no transparency and now affecting basic Internet services such as email - demonstrates why a dedicated consumer complaints commission is a good start, but a place to complain is not enough. The solution lies in creating mandatory net neutrality provisions to ensure that essential communications tools such as email are not surreptitiously degraded.

Alonzo
04-08-2007, 12:19 AM
Does this have anything to do with why rogers was offering 3 different internet speeds for 3 different prices?

BoogyMan
04-08-2007, 12:24 AM
Not sure Zo. This primarily deals with layer 3 shaping of packet flows on the ingress and egress points for the Rogers Internet services. Most packet shaping products are inline and would cover all services without regard to service level agreements.

Alonzo
04-08-2007, 12:25 AM
See, I don't understand what that means. And I struggled to understand what the original post means, other than some things went slower than they should.

BoogyMan
04-08-2007, 12:32 AM
See, I don't understand what that means. And I struggled to understand what the original post means, other than some things went slower than they should.


What Rogers is doing is rate-limiting (slowing) all encrypted flows through its Internet service in order to cut down on P2P piracy of copyrighted music. Rogers is doing this because most current P2P applications now encrypt their traffic to avoid detection of the content of their flows.

At first blush that sounds like a great idea, but the way they are implementing their shaping technology it also severely limits mission critical flows such as SSH (secure shell telnet) and SSL (secure sockets layer). If you are not sure what SSL is consider using a banking website to transfer money or manage your checking account, or a secure web based email application. Those types of traffic are the ones being lumped into the same category as the illegal P2P traffic.

Sorry about the geek-speak, sometimes I get wrapped up in it and forget that not everyone is a bits and bytes kind of person.

Alonzo
04-08-2007, 12:53 AM
Oh, I see.

Labrocca
04-08-2007, 03:06 AM
I sometimes have 3 SSH sessions open at once...I definitely enjoy a quick connection and sometimes slow packets could be a problems especially on tcpdumps which I use to view attacks and deter them.

BoogyMan
04-08-2007, 03:21 AM
This type of 'condemn all comers' activity by Rogers Internet is distressing. There are many applications now being fitted with encryption algorithms in order to belatedly secure critical data transmissions which will suffer under the new shaping policy that Rogers Internet has in place.

A broad implementation of IPv6 would provide tools to deal with some of the issues that the IPv4 based shaping technologies deal with but that is many years from being a reality.

Labrocca
04-08-2007, 03:24 AM
Where is Rogers mostly anyways?Â*Â*I use Cox here in Vegas.

nvm...looked it up..it's Canadian based.

Drocket
04-08-2007, 06:56 AM
Even beyond 'side-effect' problems created with their attempts to block P2P traffic, I have a serious problem with them attempting to crack down with P2P traffic in and of itself. There are multiple legitimate reasons for using P2P services - just this past week, I used Bittorrent to download the Lord of the Rings Online beta client, which is approximately 3.5G (and just in case anyone is interested, you can sign up for the beta for the next week or two here (http://www.gamespot.com/betas/lord-of-the-rings-online/index.php).) The World of Warcraft client uses P2P services to help distribute their patches. With over 7 million subscribers, that's a pretty high number of people to screw over in attempts to crack down on illegal P2P uses.

Labrocca
04-08-2007, 07:16 AM
Yes but 7 million pales in comparison to the amount of users with p2p that use it for illegal means.