Linux System Admins Blog

Recently, Cpanel implemented their standard way of adding custom changes to virtualhost configuration to preserve custom changes after an upgrade or Apache rebuild.
Here are the two common situations of adding custom changes:
1.)  Changes added inside a <VirtualHost>
This is very simple as we only need to create a single file that will contain our changes.  But [...]

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This article will outline the steps necessary to perform the upgrade from an older version of trac (normally 0.10 that many people are still running) to the latest stable branch 0.11 (more precisely 0.11.2 available at this time). The TracUpgrade official documentation describes this in detail, but unfortunately misses some important steps that can leave [...]

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Security should be practiced in all area. This is where the DiD or Defense-in-Depth Layer comes in.
Defense in Depth is a multiple defensive strategy recommended as a secure practices by CERT and other security organizations. Security experts apply multiple defenses and countermeasures in many areas of their system or operations. There is no single generic [...]

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Looking back it seems like most posts on this blog are helpful tips and not reports of problems we encountered. Not that we don’t have any problems but we mostly report our solutions instead of the actual problems. Of course now and again a problem comes along that doesn’t have a solution ready to copy-paste [...]

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The 2008 Internet Security Report put out by Arbor Networks has this eye popping blurb…
Attacks Now Exceed 40 Gigabits
…the largest DDoS attacks have now grown a hundredfold to break the 40 gigabit barrier this year. The growth in attack size continues to significantly outpace the corresponding increase in underlying transmission speed and ISP infrastructure investment

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Within a week I had seen the term DOS or Denial of Service being mentioned in two mainstream publications, the WJS and more recently in this article – Internet Attacks Grow More Potent -  by the Wall Street Journal.
“We’re definitely seeing more targeted attacks toward e-commerce sites,” said Danny McPherson, chief security officer for Arbor [...]

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