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Installing OSSEC from RPMs

When I first started playing around with OSSEC I downloaded the agent and server source packages then proceeded to install them by hand. This method was fine when I had a server and 1 or 2 agent systems, but for a large network of systems it is tedious and error prone. The OSSEC Project offers…

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OSSEC Log Management with Elasticsearch

Among the many useful features of OSSEC is its capability to send alerts to any system that can consume syslog data. This makes it easy to combine OSSEC with a number of 3rd party SIEMs to store, search and visualize security events.  Splunk for OSSEC is one such system that works on top of the Splunk…

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Makefile for HBase Applications

In my blog Makefile for Hadoop WordCount Example I presented a generic Makefile that could be adapted to build any Hadoop application, including WordCount. Lately I’ve been exploring HBase programming and find myself in need of a similar device for building HBase applications. In this article I’ll show you how to modify the Hadoop Makefile for…

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Yet Another SyntaxHighlighter 3.x Tweak

One day I was casually admiring one of my programming blogs in a Google Chrome mobile browser when I noticed a problem in the pre-formatted sections of the blog. The line numbers and corresponding source code lines were offset. Since I use SyntaxHighlighter, I was sure the problem could be corrected by tweaking one of…

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How to Create a Linux Virtual Machine with VirtualBox

Recently I created a training course on Hadoop programming and debugging for my colleagues at work. During the course development I decided to set up the environment I discussed in my blog Debugging Hadoop Applications with IntelliJ on a CentOS virtual machine so the students would have some Hadoop code to play with right off the…