At my company, we initially started out with a single T1 for Internet access. That gave us 1.5Mb up and 1.5Mb down. Over time, we outgrew the 1.5Mb down as we added more users. We had to add more bandwidth; however, it was not cost effective to bring in a DS3 or fractional DS3 for Internet access, just to add one or two more T1 circuits. Also, we wanted the circuits to act as a single circuit, not two or three independent circuits. We ended up ordering two additional T1 circuits in a multilink PPP bundle. Later, we added one more T1 circuit. With a total of four T1 circuits for Internet access, this gives us a total of 6Mb of Internet bandwidth (6Mb upstream and 6Mb downstream). But how do you configure four T1 circuits to act as one? Find out how Multilink PPP can help.

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Adi Sunardy, RHCT on June 10th, 2009

First I must say all thanks go to the amazing people in the iPhone development team (they don’t like links to their site because of bandwidth issues). I especially want to thank “iZsh”, “nightwatch”, “daeken” and “roxfan” and the rest of the hard working programmers for providing to everyone, the code needed to use other SIMs in the iPhone. I also want to thank a couple of my fellow chatters in the room “Dionisis” for sharing his walkthrough with me when he figured out how to do this and “aPPlewEEd” for catching an obvious error of mine that stumped me somewhere around 2 a.m. and kept me from getting this working.

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Adi Sunardy, RHCT on March 10th, 2009

 

Introduction

In the past few years, a number of serious flaws in Windows have been exposed, including MS03-026 [ref 1], the flaw that Blaster [ref 2] used to spread in 2003, right up to the recent Mocbot/Wargbot worm [ref 3] which exploited MS06-040 [ref 4] from August 2006. The number of distinct pieces of malware exploiting these flaws has rapidly increased over the same time period. There are several variants of most worms and many more than that of most of the bot families, such as Agobot, Phatbot, Sdbot, and so on. As is now well-known, bots are collections of compromised “zombie” computers used together in a botnet network for nefarious purposes.

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Adi Sunardy, RHCT on March 2nd, 2009

Hey There,

I’m off to start a new work assignment today (after sleeping in late for a week), so, as you’re reading this I may be trying not to fall asleep on the train or wishing I had slept more and/or was dead ;) In any event, this week, I thought we’d start getting back to that interstitial series on porting between shell, awk and Perl on Linux or Unix and, by way of getting back into it, make this post (at least a little bit) resemble the last post, which dealt with simple arithmetic.

One of the questions I see floating around the boards a lot has to do with using awk to calculate cumulative (or incremental) sums within a file. So, for a simple example, if a user had a file called “numbers” which contained the following:

host #cat numbers
a 4
b 2
c 8
d 57
e 12
f 8967
g 3
h 58
i 3

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Adi Sunardy, RHCT on February 6th, 2009

Before Taking Off

· Bring your tripod

· Bring your polarizer filer if you have one

· Make sure your battery is fully charged, bring the backup if you have one

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Adi Sunardy, RHCT on February 4th, 2009

The guidelines and information contained in this section remove the mystery about technical issues associated with taking photos for panoramas.

Ideal Camera Settings
Using a Tripod
Photo Overlap
Creating Photo Groups
General Tips

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Adi Sunardy, RHCT on February 3rd, 2009

Windows 7 is the name of the next version of Windows-based operating system. Windows 7 is next version of the Windows client operating and is on track to be available approximately 3 years after the release of Windows Vista. As a Microsoft Windows support professional, one of your tasks may be to install the operating system. This article is a quick walk through on the steps needed to be performed in order to install Windows 7 on one PC.

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