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Pakistan's attempts to block access to YouTube have been blamed for a near
global blackout of the site on Sunday.
Google, the owner of YouTube, blamed the outage on "erroneous internet
protocols", sourced in Pakistan
BBC News has learned that the nearly two hour blackout was almost certainly
connected to Pakistan Telecom and internet service provider PCCW.
The country ordered ISPs to block the video-sharing website because of content
deemed offensive to Islam.
The BBC News website's technology editor, Darren Waters, says that to block
Pakistan's citizens from accessing YouTube it is believed Pakistan Telecom
"hijacked" the web server address of the popular video site.
There will definitely be some fallout from this
Darren Waters
Those details were then passed on to the country's internet service providers
so that anyone in Pakistan attempting to go to YouTube was instead re-directed
to a different address.
But the details of the "hijack" were leaked out into the wider internet from
PCCW and as a result YouTube was mistakenly blocked by internet service
providers around the world.
The block on the servers was lifted once PCCW had been told of the issue by
engineers at YouTube.
A statement from Google said that the problems lasted for "about two hours".
"Traffic to YouTube was routed according to erroneous internet protocols, and
many users around the world could not access our site," it said.
Users are quite upset. They're screaming at ISPs which can't do anything
Wahaj-us-Siraj, convener of the Association of Pakistan Internet Service
Providers
"We have determined that the source of these events was a network in Pakistan.
We are investigating and working with others in the internet community to
prevent this from happening again."
A leading net professional told BBC News: "This was probably a simple mistake
by an engineer at Pakistan Telecom. There's nothing to suggest this was
malicious."
IP hijacking involves taking over a web site's unique address by corrupting the
internet's routing tables, which direct the flow of data around the world.
Cause of ban
Reports said Pakistan made the move because YouTube content included Danish
cartoons depicting the Prophet Muhammad that have outraged many.
But one report said a trailer for a forthcoming film by Dutch lawmaker Geert
Wilders, which portrays Islam in a negative light, was behind the ban.
"They [Pakistan's telecommunications authority] asked us to ban it
immediately... and the order says the ban will continue until further notice,"
said Wahaj-us-Siraj, convener of the Association of Pakistan Internet Service
Providers.
The government decision has caused uproar in Pakistan, according to
Wahaj-us-Siraj:
"Users are quite upset. They're screaming at ISPs which can't do anything.
"The government has valid reason for that, but they have to find a better way
of doing it. If we continue blocking popular websites, people will stop using
the internet."
Other countries that have temporarily blocked access to YouTube include Turkey
and Thailand.
Story from BBC NEWS:
http://news.bbc.co.uk/go/pr/fr/-/1/hi/technology/7262071.stm
Published: 2008/02/24 22:38:14 GMT
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