Quote:
Originally Posted by Cactus
Pakistan Lifts YouTube Ban
BBC NEWS | Technology | Pakistan lifts the ban on YouTube
With that settled, I am still very curious on how the routing tables were skewed to obliviate only requests to YouTube. Since yesterday I have learnt that a systematic glitch can falsely declare itself the fastest route to random websites it may or may not access. But that is usually indiscriminatory, as in case of Turkey a few years back. So how was it done only to YouTube?
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Each location has an address or IP. Youtube has many. The Pakistan Telecom, as a provider, redirected or asked the other local IP provider to redirect all requests for those (youtubes) IP's to be redirected to another site. So far, so good.
What they then did however is also pass that redirect request to one of the world hubs, namely PCCW, who instigated it and automatically passed on the request to the other main hubs around the world. It's simply based on trust, in this instance misplaced. All requests for redirects from Pakistani IP providers will now be flagged for inspection.