Un Egitto senza Rete

Di   28 Gennaio 2011
WP Greet Box icon
Benvenuto nel blog di Vittorio Pasteris ! Se vuoi essere aggiornato sulle ultime notizie di questo blog seguimi via Twitter o via Facebook o via Google+ o Iscriviti al feed RSS

Via Renesys blog

Confirming what a few have reported this evening: in an action unprecedented in Internet history, the Egyptian government appears to have ordered service providers to shut down all international connections to the Internet. Critical European-Asian fiber-optic routes through Egypt appear to be unaffected for now. But every Egyptian provider, every business, bank, Internet cafe, website, school, embassy, and government office that relied on the big four Egyptian ISPs for their Internet connectivity is now cut off from the rest of the world. Link Egypt, Vodafone/Raya, Telecom Egypt, Etisalat Misr, and all their customers and partners are, for the moment, off the air.
egypt_outages.png

At 22:34 UTC (00:34am local time), Renesys observed the virtually simultaneous withdrawal of all routes to Egyptian networks in the Internet’s global routing table. Approximately 3,500 individual BGP routes were withdrawn, leaving no valid paths by which the rest of the world could continue to exchange Internet traffic with Egypt’s service providers. Virtually all of Egypt’s Internet addresses are now unreachable, worldwide.

Update (17:30 UTC Friday)
The Internet routing situation for Egypt continues to be bleak, with an estimated 93% of Egyptian networks currently unreachable. Renesys saw no significant improvements or changes in Egyptian international Internet routing overnight.
We have examined the takedown event more closely, looking at the sequence in which Egyptian service providers removed themselves from the Internet. The following plot shows the number of available networks for each of the significant providers, between 22:00 and 23:00 UTC last night (midnight to 1am Cairo time).
All_outages_zoom2.png
Our new observation is that this was not an instantaneous event on the front end; each service provider approached the task of shutting down its part of the Egyptian Internet separately.
* Telecom Egypt (AS8452), the national incumbent, starts the process at 22:12:43.
* Raya joins in a minute later, at 22:13:26.
* Link Egypt (AS24863) begins taking themselves down 4 minutes later, at 22:17:10.
* Etisalat Misr (AS32992) goes two minutes later, at 22:19:02
* Internet Egypt (AS5536) goes six minutes later, at 22:25:10.
First impressions: this sequencing looks like people getting phone calls, one at a time, telling them to take themselves off the air. Not an automated system that takes all providers down at once; instead, the incumbent leads and other providers follow meekly one by one until Egypt is silenced.