Showing posts with label Internet Attacks. Show all posts
Showing posts with label Internet Attacks. Show all posts

Tuesday, June 10, 2008

Bandwidth Hogs and the iPhone 3G

A couple of weeks ago I purchased an AT&T USBCONNECT 881 3G card and have been doing spot bandwidth tests where 3G is available. The 3G iPhone will use the same network so these spot tests will be a good indicator of the kinds of bandwidths we can expect. You can see my speed test results by location linked here. Coverage and bandwidth has been good so far in areas where I spend time including out on Cape Cod in North Truro, MA.
On the left is a screen shot (click to enlarge) sample - 1324 Kbps downstream and 334 Kbps upstream in the wilds of the Cape Cod National Seashore - pretty good for a PC and would be very nice on a new 3G iPhone!

A recent piece on Gigaom titled Is 3G Ready for the iPhone Stress Test? is an interesting read. Here's a quote from the post:

The original iPhone runs on the 2G networks using a technology called EDGE. Despite the slower speeds, the data usage on AT&T’s mobile network ballooned due to the original iPhone. According to Chetan Sharma, our favorite mobile data guru, iPhone users used nearly five times the data used by average AT&T subscribers, and nearly twice as much as other smart phone owners. About 55 percent of the data was carried on Wi-Fi networks, while the rest was on EDGE.

3G bandwidth on a small handheld device..... sounds very nice especially for YouTube and other mobile video applications. YouTube does run on the original iPhone over the EDGE network but it is slow. As a result, most are only watching YouTube videos on their iPhones when they are within WiFi range. If users can now watch elsewhere - will mobile video become a 3G bandwidth hog? I think so.

I'm also interested in how AT&T will handle the inevitable BitTorrent iPhone file-sharing applications (these are much bigger bandwidth hogs) that will be rolling out this summer. The AT&T 3G service I purchased for my PC card has a monthly 5 Giga-Byte (GB) data "soft cap". Will users get cutoff for the month when the 5 GB cap is hit?

It's not just AT&T that's going to have to deal with these issues - they'll just likely have to face them first with the 3G iPhone.....Verizon and Sprint also have similar caps in their 3G wireless contracts.

Friday, May 30, 2008

Akamai Report: The State of the Internet Q1 2008

Akamai has published their first quarterly “State of the Internet” report for the January to March (1st quarter) 2008 time period. The company will continue to publish these quarterly reports using data gathered across Akamai’s global server network about attack traffic and broadband adoption, as well as trends seen in this data over time. The report will also aggregate publicly available news and information about notable events seen throughout the quarter, including Denial of Service attacks, Web site hacks, and network events.

Akamai is headquartered in Cambrige, Massachusetts with hardware distributed around the world that, according to their Wikipedia definition, transparently mirrors web content (usually media objects such as audio, graphics, animation, video) stored on customer servers. Though the domain name is the same, the IP address points to an Akamai server rather than the customer's server. The Akamai server is automatically picked depending on the type of content and the user's network location. In addition to image caching, Akamai provides services which accelerate dynamic and personalized content, J2EE-compliant applications, and streaming media to the extent that such services frame a localized perspective.

Here's some interesting highlights from the 2008 Q1 report:

  • During the first quarter, Akamai observed attack traffic originating from 125 unique countries around the world.
  • China and the United States were the two largest attack traffic sources, accounting for some 30% of this traffic in total.
  • Akamai observed attack traffic targeted at 23 unique network ports.
  • Many of the ports that saw the highest levels of attack traffic were targeted by worms, viruses, and bots that spread across the Internet several years ago.
  • From a global perspective, South Korea had the highest measured levels of “high broadband” (>5 Mbps) connectivity.
  • In the United States, Delaware topped the list, with over 60% of connections to Akamai occurring at 5 Mbps or greater.
  • At the other end of the bandwidth spectrum, Rwanda and the Solomon Islands topped the list of slowest countries, with 95% or more of the connections to Akamai from both countries occurring at below 256 Kbps.
  • In the United States, Washington State and Virginia turned in the highest percentages of sub-256 Kbps connections. However, in contrast to the international measurements, these states only saw 21% and 18% of connections below 256 Kbps respectively.
  • A number of major network “events” occurred during the first quarter that impacted millions of Internet users.
    • Cable cuts in the Mediterranean Sea severed Internet connectivity between the Middle East and Europe, drastically slowing communications.
    • Cogent’s de-peering of Telia impacted Internet communications for selected Internet users in the United States and Europe for a two-week period.
    • A routing change by Pakistan Telecom that spread across the Internet essentially took YouTube, a popular Internet video sharing site, offline for several hours.
There is a lot of good information in this free report - you can download it in PDF format here.