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Ask HN: Wouldn't it be trivial for ISP to determine site via traffic patterns?

4 points by ralusek ↗ HN
Even if you're using a VPN, shouldn't an ISP have access to more than enough data to determine that X packets of roughly Y size, sent with roughly Z timing is 99% likely to be S service? They have the training data...Am I fundamentally misunderstanding some part of how ISPs work?

3 comments

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stop50
the MTU (maximum transmission unit) is usually 1500 byte. most pages have more content. The only thing they can distinguish is videos, because video needs a kot of bandwith over an stable connection.
sanroot99
That's what deep packet inspection do ,but i think it gets expensive