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Debian fumble jeopardizes all sshd-equipped servers

05/17/2008  
Relevance: 8.81
As has been widely reported, the maintainers of Debian's OpenSSL packages made some errors recently that have potentially compromised the security of any sshd-equipped system used remotely by Debian users. System administrators may wish to purge authorized_key files of public keys generated since 2006 by affected client machines. Simply using a Debian-based machine to access a remote server via SSH would not be enough to put the machine at risk. However, if the user copied a public key generated on a Debian-based system to the remote server, for example to take advantage of the higher security offered by password-free logins, then the weak key could make the server susceptible to brute-force attacks, especially if the user's name is easily guessable.
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Monitor your Linux computer with machine-generated music

11/16/2006  
Relevance: 8.16
Explore audible information methods and configurations to help you monitor and manage your computing environment.
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Linux: HowTo: Emergency Reboot a Remote Machine

10/30/2007  
Relevance: 7.41
Sometimes the machine you're working on has a little oops. Maybe the reboot command has hung and the system will not shutdown or a kernel panic has occurred and although you still have shell access, there is little more you can do with the machine. The solution is simple: you need to hard reboot the machine. But you're in Phoenix and the machine is in L.A. Like any good system administrator, you have the machine hooked up to an IP-KVM (or serial over IP, if the machine is headless), but the magic SysRq keys won't send properly. So what's a sysadmin to do?
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Linux KVM Virtualization Performance

01/08/2007  
Relevance: 7.38
For only being a release candidate the Linux 2.6.20 kernel has already generated quite a bit of attention. On top of adding asynchronous SCSI scanning, multi-threaded USB probing, and many driver updates, the Linux 2.6.20 kernel will include a full virtualization solution. Kernel-based Virtual Machine is a GPL software project that has been developed and sponsored by Qumranet. In this article we are offering a brief overview of the Kernel-based Virtual Machine for Linux as well as offering up in-house performance numbers as we compare KVM to other virtualization solutions such as QEMU Accelerator and Xen.
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P2V: How To Make a Physical Linux Box Into a Virtual Machine

08/21/2007  
Relevance: 6.03
Over the last four days, I've been exploring how to convert physical Linux boxes into virtual machines. VMWare has a tool for doing P2V conversions, as they're called, but as far as I can tell it only works for Windows physical machines and for converting various flavors of virtual machines into others. I could have just rebuilt the whole machine from scratch on a new virtual machine, but that takes a lot of time and the old build isn't that out of date (one year) and works fine. So, I set out to discover how to transfer a physical machine to a virtual machine.
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A virtual appliance primer

06/17/2008  
Relevance: 6.01
Virtual machines are virtually taking over the world. By itself a virtual machine is just a container that describes various resources such as memory, disk space, processor, and network card, and allocates them from a physical machine. As with a physical machine, it's the software bits (the operating system and applications) that make a virtual machine usable. When you mix a virtual machine with real software you get a virtual appliance. Some complete Linux distributions as well as specialized apps are available as virtual appliances. Thanks to the ease in packaging one, there's no shortage of virtual appliances around, if you know where to look.
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Hackers attack Large Hadron Collider

09/16/2008  
Relevance: 5.70
The hacking attempt started around the time that the giant machine was about to circulate its first particles, under the spotlight of the world's media. On Wednesday afternoon, as the world held its breath as the machine sparked up, CMS team members were scouring computers at the machine for half a dozen files uploaded by the hackers on September 9 and 10."We think that someone from Fermilab's Tevatron (the competing atom smasher in America) had their access details compromised," said one of the scientists working on the machine."What happened wasn't a big deal, just goes to show people are out there always on the prowl."
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Automatically generate PHP documentation from Subversion with phpDocumentor

11/05/2007  
Relevance: 5.64
The longer I program, the more structured my programming methods have become. Currently I am busy playing with generated documentation and unit testing. Generated documentation is an all round great idea, but it has a drawback: You need to generate it all the time. So I set out to use Subversion's post-commit hook to generate fresh documentation for my PHP projects using phpDocumentor. I have written a little Python script that you can call from Subversion's post commit hook. This script scans your subversion project for files that have the phpdoc property set. If any of these have changed, then it regenerates your documentation using phpDocumentor. It can also deal with files that are not kept in your Subversion repository and supports anything also supported by phpDocumentor.
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Installing Xen On CentOS 5.2 (i386)

11/09/2008  
Relevance: 5.44
This tutorial provides step-by-step instructions on how to install Xen on a CentOS 5.2 system. Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called virtual machines or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.
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Thoughts on Ubuntu 8.10.

12/24/2008  
Relevance: 5.27
Recently I finally got enough hardware together to build a new computer that will be used to test all the latest games and windows software on. When I built the new machine that meant I had my old main machine to do something with.
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Showing 10 articles of total 23433 in database ( English).

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