Weblog Archives
You are currently browsing the archives for the Security tag.
Published on October 30th, 2009 by George Notaras - Comments : 0
setenforce is a command line utility that is used to switch the mode SELinux is running in from enforcing to permissive and vice versa without requiring a reboot. Lately, I’ve started experimenting again with SELinux on a live system. The default targeted SELinux policy, as usual, needs some adjustment to work with a custom server [...]
Published on October 17th, 2009 by George Notaras - Comments : 20
I use Microsoft Windows 7 RC on my main desktop computer since June 2009. Since there was no Windows ports of my favorite editors in Linux (gedit on Fedora/CentOS), I decided to use Notepad++, an open-source source code editor and Notepad replacement, which is released as free-software. Soon I realized that this application was too [...]
Published on October 12th, 2009 by George Notaras - Comments : 4
I’ve been using Thawte‘s free personal email digital certificates for some years now. Unfortunately, Thawte discontinues the Personal E-mail Certificate and Web of Trust services. All issued certificates will be revoked on November 16th 2009 and the particular services will no longer be available after that date.
Published on October 6th, 2009 by George Notaras - Comments : 2
It’s been a long time since the last time I had done any cleaning in the G-Loaded Forums. I use the forums for further discussion about the published content, since the comments are disabled after a period of time. During the last months the place had been left at the hands of bots. But this [...]
Published on March 28th, 2009 by George Notaras - Comments : 9
Two weeks ago, my MTB got stolen. It was a cheap bike and, after 700Km during the last 5 months without any servicing, it was in a really bad shape. I used a cheap lock to “protect” it. I relied on the bike’s bad condition and assumed that noone would want to steal it. So, [...]
Published on February 20th, 2009 by George Notaras - Comments : 0
Users of Adobe Reader should be aware of a newly discovered critical vulnerability in the Reader which could potentially allow a third party to execute arbitrary code, according to this security advisory by Adobe. The vulnerability affects several versions of Adobe Reader (and Acrobat). Adobe states that updates addressing the issue will be available by [...]
Published on January 23rd, 2009 by George Notaras - Comments : 0
I thought it would be nice to share with you that I received a comment from Pádraig Brady, member of the GNU Core Utilities (coreutils) maintainers team, on yesterday’s post about effective data wiping saying that he has decreased shred‘s default number of passes from 25 to 3, as shown in this git commit. The [...]
Published on January 22nd, 2009 by George Notaras - Comments : 5
One of the first things computer users, who are concerned with security, learn is that multiple overwrites with ones and zeros are required in order to wipe data to the extent that it is unrecoverable by any forensic analysis tools. According to this article on Softpedia, on which I stumbled while searching for something else, [...]
Published on December 18th, 2008 by George Notaras - Comments : 0
I’ve been using the mod_dav_svn module for Apache, part of the subversion distribution package, in order to make several SVN repositories available over the HTTP protocol for quite some time now. More specifically, I use a multi-repository setup under the same virtualhost by using the SVNParentPath directive of mod_dav_svn. Also, the authorization policy is enforced [...]
Published on November 28th, 2008 by George Notaras - Comments : 0
delayed-shutdown is an initscript that delays the shutdown (runlevel 0) or reboot (runlevel 6) procedure as long as a pre-defined lock file exists. The goal is to create a mechanism, which can be used by programs that perform critical operations that must not be interrupted, in order to delay system shutdown until these programs have [...]