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Security

Port knocking: A security idea whose time has come

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Security

Many, many innovations come from the Linux and Unix world. Few are more intriguing to me than port knocking. Port knocking works on the concept that users wishing to attach to a network service must initiate a predetermined sequence of port connections or send a unique string of bytes before the remote client can connect to the eventual service.

10 Best Security Live CD Distros

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Security

Here's a list of the 10 best security Live CD Distros. It's a nice compilation with brief descriptions of tools and such with handy download links.

Hackers Targeting Mambo Security Holes

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Security

Hackers are actively seeking out unpatched versions of the Mambo content management system, which recently repaired a serious security hole. Sites running on Mambo should upgrade to the latest version as soon as possible.

Enterprise Unix Roundup: The Fed-Backed Bug Zapper

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Security

This week, Coverity announced the initial results of its code scans, churning out numbers for 32 open source projects. Somewhat tellingly, the average defect density of just the LAMP (Linux, Apache, MySQL, and Perl/PHP) stack was .290. These numbers are all well and good, but what are open source developers supposed to do with them now?

Test Shows Unpatched Windows System's Vulnerability

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Security

A test has revealed that a Linux server is far less likely to be compromised than a Windows one. In fact, unpatched Red Hat and SuSE servers were not breached at all during a six-week trial, while the equivalent Windows systems were compromised within hours.

Grid Computing Pros Weigh in on Security Issues

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Security

The Globus Consortium Journal (http://www.globusconsortium.org/journal) this month features Grid security perspectives from a range of experts from both the open source and vendor community. Highlights include:

Top 10 Ways to Protect Your Linux Home System

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Security

As a result of articles referring to the threat of Worms and Viruses attacking Linux systems, many new Linux users are in a panic. To help them out and calm any panic stricken nerves, I've completed a brief, encouraging and straightup list for protecting your Linux home system.

Linux Kernel Security in a Nutshell

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Security

Recently, I started looking more closely at some of the security add-ons for Linux and was surprised to find so many kernel-related projects out there. Now that I have been enlightened, I will share some of what I've learned. In this article, I'll give an overview of what's out there.

Firefox Exploit Emerges

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Security

An exploit that takes advantage of a recently-patched bug in Mozilla Corp.'s Firefox browser has gone public.

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More in Tux Machines

Matching databases to Linux distros

Relational database management systems (RDBMSs) aren’t the sort of thing to get most folk out of bed in the morning – unless, of course, you happen to think they’re one of the most brilliant concepts ever dreamed up. These days you can’t sneeze without someone turning it into a table value in a database somewhere - and in combination with the freely available Linux operating system, there’s no end to them. Most Linux distros make it almost trivial to add popular DBMSs to your system, such as MySQL and MariaDB, by bundling them in for free in their online app stores. But how do you tell which combination - which Linux distro and which DBMS - will give you the best performance? This week we've revved up the Labs servers to ask the question: what level of performance do you get from OS repository-sourced DBMSs? Read more

The Curious Case of Raspberry Pi Consumerism

I find the attitude of many within the Raspberry Pi community to be strange and offensive. I first discovered this odd phenomenon (odd because it contradicts the ethos of the project's academic foundations) back when it first started, as many within the Raspberry Pi community took an extremely hostile attitude toward academic freedom, apparently in defence of various parties' highly dubious intellectual monopolies (Broadcom and MPEG-LA, for example). I pointed out the irony and hypocrisy of their attitude at the time, explaining that they were more than happy to leech Free (as in freedom) Software for their own benefit, but then balked at the prospect of freely sharing the results, and in particular this contradicted their stated academic goal of facilitating better computer education in UK schools, an environment that rightly demands open access to knowledge. Read more

Google Chrome 38 Beta Brings New Guest Mode and Easier Incognito Mode Switching

The developers have explained that the user switching feature has been redesigned and it will make changing profiles and into the incognito mode a lot simple. They have also added a new experimental Guest mode, a new experimental UI for Chrome supervised users has been implemented, and numerous under-the-hood changes have been made for stability and performance. "This release adds support for the new element thanks to the hard work of community contributor Yoav Weiss, who was able to dedicate his time to implementing this feature in multiple rendering engines because of a successful crowd-funding campaign that raised more than 50% of its funding goal." Read more

PfSense 2.1.5 Is a Free and Powerful FreeBSD-Based Firewall Operating System

PfSense is a free network firewall distribution based on the FreeBSD, it comes with a custom kernel, and a few quite powerful applications that should make its users’ life a lot easier. Most of the firewall distros are Linux-based, but PfSense is a little bit different and is using FreeBSD. Regular users won't feel anything out of the ordinary, but it's an interesting choice for the base. The developers of PfSense are also saying that their distro has been successful in replacing a number of commercial firewalls such as Check Point, Cisco PIX, Cisco ASA, Juniper, Sonicwall, Netgear, Watchguard, Astar, and others. Read more