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Amazon Responds About SIP Attacks From EC2

On April 18th Amazon finally responded publicly with respect to the SIP attacks recently suffered from hosts within their EC2 service. Their response comes in the form of an informational security bulletin posted to their AWS Security Center.

There have been some recent discussions about SIP brute force attacks originating from Amazon EC2. We can confirm that several users reported SIP brute force attacks originating from a small number of Amazon EC2 instances about a week ago. It appears these attacks were designed to exploit security vulnerabilities in the SIP protocol. There is nothing specific about this attack that requires Amazon EC2. It was a brute force attack that could be launched from any computer on any network.

Amazon: You Got Some ‘Splaining To Do

April 17, 2010
Michael Graves
VoIP

Over the past week friend and VUC regular contributor Fred Posner has been suffering a SIP attack from someone using the Amazon EC2 cloud. Fred’s more than just a friend, he’s a well established small businessman and an upstanding member of the Asterisk user community.

On his VoIP Tech Chat blog Fred has documented with outstanding clarity his attempts to report the attack that he has suffered this past week, and Amazon’s rather limited response. My opinion is that Fred has done exactly as he should in his efforts to report the attack. It’s Amazon’s response that has fallen short.

A Talk In The Clouds: Asterisk on EC2

February 14, 2009
Michael Graves
Asterisk, Computing, VoIP

Over the past year there has been a building of interest in running Asterisk on cloud infrastructure such as Amazon's EC2. Here's a compilation of sources on the topic: Ronald Lewis' blog The ResVoip Project Voxilla's VoIP In The Cloud:…

Netflix Streams On TivoHD, in HD

February 8, 2009
Michael Graves
Broadband, HDTV, Video

Early in 2008 when Netflix officially dropped support for HD-DVD I thought that I’d have to terminate our Netflix account. We were getting HD-DVDs routinely, but had no plans to migrate to Blu-Ray. Still don’t really. However, my wife had been enjoying downloads from Amazon’s Unboxed service, even if they were all SD and marginal image quality. It was a suitable substitute for Comcast Pay-Per-View which you simply can’t use on a TivoHD because of cable card issues.

Asterisk In Amazon’s Corner Of The Cloud

July 11, 2008
Michael Graves
Asterisk, VoIP

Ronald Lewis has recently posted to the Asterisk Users List an announcment with respect to a preview of a guide for using Asterisk on the Amazon EC2 service. This is extemely interesting. It gives a new dimension to the concept…

Amazon Unboxed Goes HD: Eventually

May 17, 2008
Michael Graves
HDTV, Video

Just poking around this afternoon I found this which says that Amazon is definitely working on an HD version of their Unbox movie download service. This service is operated in partnership with Tivo. The user interface is very nicely integrated into the Tivo menus. My wife likes it a lot.

They suspect that the new service will be based upon H.264 compression. That’s about the only real option around.

Neither the company nor its customers will have unlimited bandwidth so older compression schemes would be impractical. Newer compression schemes would require that Amazon encode the content themselves. Better that they settle on H.264 which is what Apple’s iTunes uses amongst others.