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Net Neutrality and BitTorrent - No More Throttling?
Umaga's Purse writes "Will ISPs still be able to throttle BitTorrent traffic now that a significant proportion of it is legit? It's a tough question, especially for ISPs like AT&T (which agreed to run a neutral network in order to gain approval for its merger with BellSouth from the FCC). It's not just a problem for AT&T, though: 'ISPs that have made no such agreements may not need to worry about BitTorrent taking over their networks, but they do need to wrestle with the issue of how to handle it now that so many legal uses of the protocol are available. Do they want to irritate their BitTorrent-using contingent, or let BitTorrent flow unhindered at the risk degrading the experience of those who don't download torrents?'"
Back when Napster was the horror of school network admins everywhere it was not uncommon to block the common Napster port. In response students would change the port to a more common one... such as say... 80 and be able to keep on downloading... that is until the admins spent a few more bucks or upgraded their existing equipment.
Classifying network traffic based only on the port went out the window well over 5 years ago when modern packet shapers came to the market which were able to analyze the very contents of packets and classify them based on the type of service they contained rather than the port they used.
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How about before the ISPs even think of throttling down BitTorrent or any other type of traffic - they make even a casual effort to throttle back the 95% of email that is spam?
Why? Spam doesn't take up a significantly large portion of internet traffic and is a lot harder to separate out of the mix, than bittorrent. Even zombies performing DDoS attacks don't generally make up much of the overall internet traffic, although the spikes they create are problematic.
In reality, a number of large network operators don't want network neutrality. They want the opportunity to offer services and make sure competitors are unable to compete. They want to shake down companies individually by threatening to degrade their service and not their competitor's. They care about money; no hypocrisy there.
there are a number of ways, from deep packet inspection (studying packets and throttling those that appear BT-ish) to just cutting the uplink speed for a naughty subscriber. i think i my ISP may have done that to me already, judging by my ratios.
i do my own traffic shaping in my house with a linksys router running openwrt and x-wrt. i do all my BT stuff from a vmware machine dedicated to all things BT (a win2k workstation running uTorrent) and i told the QOS config to file all traffic to and from his internal IP as bulk. i also use QOS to give priority to all traffic to and from my VOIP telephone adapter.
in case you are not a linksys firmware freak... putting openwrt on your router is like upgrading your PC to openBSD. loading x-wrt on your openwrt router is like installing KDE on your openBSD machine.
the result is BT can leech and seed 24x7x365, the humans in the house can surf and game unimpeeded and phone calls suffer no jitter from MMORPGS or BT.
i feel sort of like a hypocrite for being a net neutrality fanboy and using QOS inside my firewall... but at least i can trust myself to not degrade my access in favor of my own proprietary offerings.
some may say i am a little too trusting, but i have known me for a long time... i think we can trust eachother.
sarcasm:
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1. harsh or bitter derision or irony.
This may work in an ideal world, but the fact is that different applications do have different needs, and to make the Internet useful for more things it is necessary to have different levels of service -- and I don't mean company A paying B for higher priority -- I mean apps VoIP, which requires moderate bandwidth but also low latency, for example, should get a higher priority than your bittorrent packet, which can build in in a queue before being unloaded to you after some VoIP is done. Similarly, Bittorrent shouldn't be throttled per se, but just relegated further back in the queue because generally one doesn't care about latency in the system, "just" throughput.
A sensible approach to make you happy (maybe) would be to limit the amount of bandwidth at each QoS level defined. If you want to burn your 500mb/month of highest QoS on bittorrent then so be it. Make the lowest tier of QoS truly unlimited. or some scheme like that.