How Egypt Switched Off the Internet

Amid spreading protests, the Egyptian government has taken the incredible step of shutting down all communications late Thursday. Only a handful of web connections, including those to the nation’s stock exchange, remain up and running.

It’s an astonishing move, and one that seems almost unimaginable for a nation that not only has a relatively strong Internet economy but also relies on its connections to the rest of the world.

But how did the government actually do it? Is there a big kill switch inside Egyptian President Hosni Mubarak’s office? Do physical cables have to be destroyed? Can a lockdown like this work?

Plenty of nations place limitations on communications, sometimes very severe ones. But there are only a few examples of regimes shutting down communications entirely — Burma’s military leaders notably cut connectivity during the protests of 2007, and Nepal did a similar thing after the king took control of the government in 2005 as part of his battle against insurgents. Local Chinese authorities have also conducted similar, short-lived blockades.

The OpenNet Initiative has outlined two methods by which most nations could enact such shutdowns. Essentially, officials can either close down the routers which direct traffic over the border — hermetically sealing the country from outsiders — or go further down the chain and switch off routers at individual ISPs to prevent access for most users inside.

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About Your faithful curator, Todd
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