Feeds

Missing dot sends Sweden tumbling off internet

DNS doldrums for mournful Scandies

Security for virtualized datacentres

Sweden effectively fell off the internet last night when maintenance to Domain Name Systems damaged every single .se web address.

The problem happened at quarter to ten last night and took just less than an hour to fix.

But some problems remained because the address data is cached externally by ISPs - these servers had to be flushed - some ISPs outside Sweden, unaware of the problem, may still be having problems finding addresses ending in .se.

An error in a script used to update the .se domain led to an error being introduced into every single domain name. The software failed to add the fullstop to .se addresses. This meant the system failed to understand that .se was the top level domain.

According to pingdom - the Swedish company which monitors websites' uptime - the problem was made worse because the duff data was then cached by external ISPs.

Pingdom said it was not uncommon for individual sites to have DNS problems, but far more unusual for an entire country to get wiped out. It said the effects were serious in Sweden, with 900,000 .se addresses, but would have been far worse if the 80 million .com addresses had been corrupted.

The Swedish registry, the Internet Infrastructure Foundation, said the problem was caused by an incorrect zone file used during planned maintenance. The firm's testing procedures did not pick this up, but its surveillance system did once the software was in use.

Once this happened a new zone file was created and distributed within an hour. The Internet Infrastructure Foundation said ISPs still having trouble should flush or restart machines. There's more advice here.

IIF is investigating to see if its internal procedures need to be improved. ®

Internet Security Threat Report 2014

More from The Register

next story
TEEN RAMPAGE: Kids in iPhone 6 'Will it bend' YouTube 'prank'
iPhones bent in Norwich? As if the place wasn't weird enough
Consumers agree to give up first-born child for free Wi-Fi – survey
This Herod network's ace – but crap reception in bullrushes
Crouching tiger, FAST ASLEEP dragon: Smugglers can't shift iPhone 6s
China's grey market reports 'sluggish' sales of Apple mobe
Sea-Me-We 5 construction starts
New sub cable to go live 2016
EE coughs to BROKEN data usage metrics BLUNDER that short-changes customers
Carrier apologises for 'inflated' measurements cockup
Comcast: Help, help, FCC. Netflix and pals are EXTORTIONISTS
The others guys are being mean so therefore ... monopoly all good, yeah?
Surprise: if you work from home you need the Internet
Buffer-rage sends Aussies out to experience road rage
EE buys 58 Phones 4u stores for £2.5m after picking over carcass
Operator says it will safeguard 359 jobs, plans lick of paint
prev story

Whitepapers

A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.