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bgp

A collection of 3 issues

ASN32 is still broken

In December 2008, I complained that the internet was broken for 4-byte ASN speakers. Together with Rob Shakir and Jonathan Oddy, we've been meticulously dissecting a vulnerability that could bring global networking to its knees. Some brutally technical context: Every network on the internet needs a unique identifier.

Internet broken for ASN32 speakers today

A BGP vulnerability emerged when an autonomous system network (AS196629) announced a routing update that triggered unexpected behaviour in OpenBGPd. The update contained a path attribute that violated the specifications of RFC4893, a technical standard governing four-byte autonomous system numbers. When routers receive network updates, they rely on defined protocols

YouTube Pushed Off the Air: Routing Gone Rogue

While you were watching cat videos or scrolling through Facebook, the UK economy was busy generating $1.93 billion a year in output—that’s £550,000 every two and a half hours. But today, if it were a workday, our collective output would have been a tad higher. Why?