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Technology Errors

Litespeed Compile PHP Error: Configure: Error: libpng.(a|so) Not Found

ErrorsBy alexAugust 22, 2010Leave a comment

This is the second of three or four issues I ran into while building PHP via the Litespeed Admin Console. Each of the errors was caused by missing packages on a new development server I was bringing online. Below I describe the error in more detail, the cause of the error, and how the error…

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Technology Insights

Windows 7: Turn Off Ding When Using Tab Via SSH Sessions

InsightsBy alexAugust 21, 20101 Comment

This is something that came up earlier today with a friend of mine and decided it might help someone else in the future so I should note it. The sound I am talking about disabling is the default ding on Windows that occurs for many reasons but specifically if you are SSH’d into a server…

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Technology Errors

Litespeed Error Log:[ERROR] Swapping directory is not writable:/tmp/lshttpd/swap/

ErrorsBy alexAugust 20, 2010Leave a comment

I booted up a server yesterday that I had not used in quite a long time and had some issues right from the beginning. I remembered the server working the last time it was live so I was assuming I could boot it up and test something on the ruby application that was installed on…

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Technology Insights

2001 Honda Civic: Air Conditioning & Power Locks Stopped Working And Emergency Brake Light On

InsightsBy alexAugust 19, 201045 Comments

I primarily write about computer hardware and software on this site however the intention has always been to write articles that assist people in resolving problems. A couple days ago my wifes car, which is a 2001 Honda Civic, started having multiple problems all at the same time. These problems included the air conditioner compressor…

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Technology Errors

Litespeed PHP: configure: error: xml2-config Not Found. Please Check Your libxml2 Installation

ErrorsBy alexAugust 18, 20102 Comments

While compiling PHP on a Litespeed web server this evening I ran into multiple issues one of which related to the libxml2 package on the server. This can be confusing because on the server libxml2 was installed. Below is more information regarding the error located in the Litespeed Admin detailed log report which can be…

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Technology Insights

CentOS Yum: Disable A Specific Mirror

InsightsBy alexAugust 17, 20102 Comments

Installing a bunch of packages on a CentOS server today I ran into an issue where the CentOS Base mirror I was using was incredibly slow. First I checked to make sure that the yum-fastestmirror plugin was installed which it was. Next I attempted to clear the fastest mirror plugin cache by running “yum clean…

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Technology Insights

Overclock NVIDIA G210M & NVIDIA 9400G M GPU’s In A Dell Studio XPS 1340

InsightsBy alexAugust 16, 20102 Comments

This weekend I was investigating the capabilities of the two NVIDIA graphics cards in my laptop and a password cracking application called oclHashcat. The oclHashcat application uses OpenCL, the Open Computing Language, to utilize the processing power of your graphics cards GPU’s to crack passwords. My laptop is a Dell Studio XPS 1340 which utilizes…

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Information Security

Automated Password Cracking: Use oclHashcat To Launch A Fingerprint Attack

SecurityBy atomAugust 15, 20108 Comments

The below article explains how I used password fingerprinting to crack 500,000 password hashes in less than half a day completly automated. This article shows each command step by step, but only to describe the details of how password fingerprinting with oclHashcat works. The reality is that the password fingerprinting process can easily be automated…

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Information Security

Install oclHashcat On Windows 7 With NVIDIA GPU, Update Nvidia Drivers

SecurityBy alexAugust 14, 2010Leave a comment

I have been using Hashcat and oclHashcat a lot in recent weeks but have been limited to primarily using it on Linux servers so I decided to give it a shot on a couple Windows machines. Below I describe how I got oclHashcat operational on Windows 7 Ultimate 32-Bit on a desktop computer with a…

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