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Entries for September 2007

articleus September 28, 2007 by Don MacVittie
Martin McKeay is a respected member of the security community with a lot of great thoughts rambling around in his head. I normally read his stuff with interest and nod my head like a ditto-head. But no one is perfect, and recently he expounded upon the video "hacking the grid", and talked about how wrong it was. Having had direct experience with more than three (I'm purposely obfuscating here, don't want to point too many fingers) utilities, I can say without a doubt that his premise is wrong i...
Introduction Any large development library has some choices to make about implementation, and iControl is no exception. A library is designed to give others access to routines that you have written (in our case, BIG-IP interfaces), and when the public-facing interfaces are defined, the designers have to try and foresee how the majority of users will want to use the library.  With iControl for BIG-IP, the design was approached as what I call “Building Block Minimalist”. That’s where you bu...
articlehardwarebig-ipus September 27, 2007 by Jeff Browning
Here at DevCentral, our team is multi-talented. For those that don't know this, Colin is something of an ASCII artist. #############################################################################################################################################################################################################################################################################################################################################################################################...
articlelinuxus September 27, 2007 by Don MacVittie
Lori and I run a lot of servers out of the house, and we're replacing one that has served us well but is nearing the end of its useful life. Since this particular server is publicly exposed, it gets Linux by default. That's our policy, and it works for us. Last night I finally had the server completely working, and went to install the OS. We have licensed copies of most Linux distros, but they're all getting a little aged. It's been years since I researched and installed a free Linux distro, so ...
More bandwidth can't always solve your application performance problems We have, over the years, come to the realization that application performance issues cannot always be solved simply by increasing the amount of bandwidth available. The concept was inherently flawed from the beginning anyway. You can increase the number of lanes on the highway but that doesn't mean that you'll get to your destination faster, it just means more people can get where they're going in about the same amount of ti...
So, now that you've got the marketing overview of iControl all figured out, the next question you are likely to have is regarding how iControl works from a technical perspective.  This article will attempt to illustrate the various components of an iControl application. Before we go any further, I'm going to describe all the technical terms that I'll be using so hopefully when you read further in the article, you understand what I'm talking about. API (Application Programming Inte...
articleus September 26, 2007 by Dan Matte
I never thought that I would be pairing the words F5 and salmon together but a strange turn of events has made it happen. Last week I sent out a message to employees here at F5 to let them know that we are once again in the running for being one of the best places to work in the Northwest.  One of the responses I received was from one of our employees who has a team in the Red Bull Soapbox car race that is taking place in Seattle this Saturday.  After some interesting emails and quick work by...
articlevirtualizationbig-ipnewstechtip September 26, 2007 by Deb Allen
We've seen a lot of interest lately in persisting connections from the same client to the same backend server when they arrive on different virtual servers. In many cases an iRule is really not necessary, so I thought I'd point out some of the other ways you can bend LTM persistence to your will. While there are many other applications that require multiple services to be processed on the same server for each client, the most common scenario seems to be HTTP and HTTPS running on a set of web...
articleamazonus September 25, 2007 by Joe Pruitt
I've owned an iPod for years, but I have yet to buy a song from the iTunes Music Store.  There have been times that I've wanted to get a new song or album from a group I've either heard on the radio or had mentioned to me by friends, but I just can't get past the closed limiting system that is DRM.  I have several computers/devices that I listen to media on: My iPod, my Desktop at home (Windows Media), my laptop (iTunes), my kids computer (Windows Media/iTunes), and my Cell Phone (Windows Mobile...
As you've no doubt noticed, there is a bit of duplicate name confusion in the Web 2.0 world. Developers say "Web 2.0" and they mean SOA, dynamic binding, etc. When business people say "Web 2.0" they mean blogs, video, RSS feeds. DevCentral is an example of Web 2.0, the business version. We've got blogs, video (no DRM, thank you), podcasts, forums, articles, and it's all wrapped together nice as pie. But DevCentral is also an example of utilizing Web 2.0. Some of the wizardry done behind the scen...
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