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Latvijai zems risks tikt atslēgtai no interneta

Kategorija: Kritiskā Infrastruktūra

How hard is it to disconnect a country from the Internet, really?

The key to the Internet’s survival is the Internet’s decentralization — and it’s not uniform across the world. In some countries, international access to data and telecommunications services is heavily regulated. There may be only one or two companies who hold official licenses to carry voice and Internet traffic to and from the outside world, and they are required by law to mediate access for everyone else.

Under those circumstances, it’s almost trivial for a government to issue an order that would take down the Internet. Make a few phone calls, or turn off power in a couple of central facilities, and you’ve (legally) disconnected the domestic Internet from the global Internet. Of course, this level of centralization also makes it much harder for the government to defend the nation’s Internet infrastructure against a determined opponent, who knows they can do a lot of damage by hitting just a few targets.

Here’s a map of the world, with countries colored according to the Internet diversity at the international frontier. We did a census, from our own view of the global Internet routing table, of all the domestic providers in each country who have direct connections (visible in routing) to foreign providers.

If you have more than 10 internationally-connected service providers, but fewer than about 40, your risk of disconnection is fairly low. Given a determined effort, it’s plausible that the Internet could be shut down over a period of days or weeks, but it would be hard to implement and even harder to maintain that state of blackout. There are 58 countries in this situation, ranging from Bahrain (at the small end) to Mexico (at the largest end). India, Israel, Ecuador, Chile, Vietnam, Latvia, and (perhaps surprisingly) China are all in this category.

Vēsture gan pierāda, ka Latvijas internetu īslaicīgi var atslēgt arī viens noguris infrastruktūras administrators.


2012-12-04  »  edgars

Re: Latvijai zems risks tikt atslēgtai no interneta

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