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Problems in SpamAssassin, PEAR, and Bugzilla
In this weeks Security Alerts, we look at problems in SpamAssassin, PHP PEAR, Bugzilla, Heimdal / Kerberos telnetd, Vipul's Razor, TikiWiki, poppassd_pam, zlib, FUSE, Solaris kernel, HT Editor, GNATS, JBoss jBPM, Trustix Secure Linux, and Trac.

( Permalink: Problems in SpamAssassin, PEAR, and Bugzilla      Submitted by Noel Wed Jul 27, 2005 )

An Introduction to TCP Wrappers
The latest article at Linux, Unix, /etc/, An Introduction to TCP Wrappers, looks at how this package, designed to filter incoming connections to network services, can be used to enhance the security of a server.

( Permalink: An Introduction to TCP Wrappers      Submitted by Paul Dunne Wed Jul 27, 2005 )

Improving Code Layout Improves Applications
"An application will have many instructions, code has to be written to cover all eventualities -- even those that rarely (and perhaps never) happen. A consequence of this is that most applications end up with a set of instructions that do the work, and a lot of other instructions which have to be there, but are never used. The drawing 1 shows a way of visualising this. The green rectangle represents the whole application, within this application there are a number of routines. Within each routines there are instructions which are frequently executed, these are coloured red, and instructions that are rarely executed, these are coloured blue."

( Permalink: Improving Code Layout Improves Applications      Submitted by Noel Wed Jul 27, 2005 )

Noise in Computing: A Primer
"A primer on noise and sound was one of the many items on my want list for core articles when Silent PC Review was first launched. There is so much misinformation on the topic that I felt it mandatory to provide some kind of baseline, an introduction to this complex subject. It is, in fact, a subject that seems simple only if you never scratch below the surface. Hopefully, this article serves well enough for its purpose: To provide guidelines for those who seek a quieter computing experience by which they can interpret noise specifications, commentary by others, and what their own ears tell them."

( Permalink: Noise in Computing: A Primer      Submitted by Noel Wed Jul 27, 2005 )

High-availability middleware on Linux
Data is at the heart of any business, and access to it should be available with minimum downtime. In this article, take a look at the setup and implementation of a Linux High Availability solution for IBM DB2 Universal Database. Critical database applications demand a robust strategy for the preventing data loss and guaranteeing high availability of your data store. DB2 UDB makes it easy to manage large databases with excellent availability characteristics.

( Permalink: High-availability middleware on Linux      Submitted by Anonymous Wed Jul 27, 2005 )

Automated Backups on Tiger Using rsync
"In this article I'm going to show you how to create a free, customizable backup solution using only software that comes with Mac OS X 10.4, which will automatically back up changes to your data without user intervention."

( Permalink: Automated Backups on Tiger Using rsync      Submitted by Noel Wed Jul 27, 2005 )

Theo de Raadt on Industry and Free Software
The article that was here has been replaced with this interview with Theo de Raadt of the OpenBSD project. The article that was up was from a year ago and was a review of an old version of OpenBSD. This should be much more interesting.
"Q: How did you become involved in writing free software?
I suppose even before going to university. A very long time ago, back in the days of the Commodore 64 and the Amiga, there was a culture of hobby programmers who would write things and then post them to BBSes, and then those things would propagate. I guess I started all the way back then writing little graphics programs and libraries and small video games. Later on, in the early Unix days, that turned into the Usenet group comp.sources.unix. And then around the time the Internet and web started becoming popular and common, we all just kept doing the same thing. Most of the people, like me, who do this thing have a culture of collaboration and ideas, rather than doing software for a job."

( Permalink: Theo de Raadt on Industry and Free Software      Submitted by Noel Tue Jul 26, 2005 )

KDE: Thiago Macieira
"I develop some code in kdelibs (mostly libkdecore) and I am currently the maintainer of the low-level networking code. I have also contributed to the ioslaves, as an extension of my own networking framework, and a bit regarding encodings/Unicode-issues. The application I watch most closely is Kopete, which is probably the most visible application in kdenetwork, at least now that KMail has left us for kdepim. However, I don't consider myself a Kopete developer: I merely follow the development and try to give input to the actual developers (who are, by the way, doing a great job)."

( Permalink: KDE: Thiago Macieira      Submitted by Noel Tue Jul 26, 2005 )

Linux on a IBM ThinkPad T21
"Similarly, depending on the writer, many variations exist about the usefulness of Linux on desktops and laptops. In some ways, I understand the confusion and the various conclusions people draw. Recently, I had the opportunity to install Linux on an IBM ThinkPad, and both ingenuity and a commitment to complete the job were required. That's not what I expected at the start. I found Linux useful immediately. Later, I found the software I needed to make it work the way one would expect from a manufacturer."

( Permalink: Linux on a IBM ThinkPad T21      Submitted by Noel Tue Jul 26, 2005 )

Using emotive faces to convey system state
"In order to prepare for Anil leaving our group, I have decided to put together a small application that will ease the transition into broken systems and general chaos. I found a program called wmdl that displays a little Doom guy or penguin who gets angrier as system load goes up. I made a quick modification that is displayed below:"

( Permalink: Using emotive faces to convey system state      Submitted by Noel Tue Jul 26, 2005 )

Build a Wireless ISP on Linux
Setting up a wireless Internet Service provider (WISP) for your office or neighborhood doesn't have to be a taxing or expensive ordeal. If you build your network from easy-to-buy equipment and use Linux, you can use the power of shell scripts to make network management easy.

( Permalink: Build a Wireless ISP on Linux      Submitted by Anonymous Tue Jul 26, 2005 )

What OS X Could Learn From Windows
"Now why is it that I can list all the features I want Leopard to have and as long as none of them are from Windows, its cool? But dare suggest OS X needs a feature already in Windows and the world comes down on you. We can admit that OS X is not perfect, but not that Windows is better in some ways."

( Permalink: What OS X Could Learn From Windows      Submitted by Noel Tue Jul 26, 2005 )

Unix and Linux Podcasting Guide
The guide to podcasting for Linux, Unix, and Mac OS X users describes what podcasting is, what a podcasting client does, lists some available clients, and provides information on how to create a podcast under Linux, Unix, and Mac OS X. The guide also discusses what content is available as podcasts and gives some suggestions on finding feeds.
Last Updated: 14 Aug 2005

( Permalink: Unix and Linux Podcasting Guide      Submitted by Noel Mon Jul 25, 2005 )

Which iPod is right for you?
"Now that Apple offers three versions of its diminutive music player—the iPod shuffle, the iPod mini, and the color iPod (including the iPod U2 Special Edition and most HP-branded models)—at prices ranging from $99 to $400, there’s far more to consider. Will a small iPod or a large iPod serve you better? And is there any advantage to owning Apple’s iPod instead of one branded with the HP logo? I’ve had my hands on every iPod model Apple has released, so I’m in a unique position to give advice on finding the iPod that’ll be the best fit for you."

( Permalink: Which iPod is right for you?      Submitted by Noel Mon Jul 25, 2005 )

Team Banzai: Mac SUV
""Dora", is the world's first fully autonomous vehicle driven by Mac OS X. The entire development and race management efforts at Team Banzai is being done using Apple Mac OS X technology."

( Permalink: Team Banzai: Mac SUV      Submitted by Noel Mon Jul 25, 2005 )

Featured Articles:
Unix and Linux Podcasting Guide

Expect and SSH

The Linux Enterprise Cluster

Book Review: Podcasting: Do-It-Yourself Guide

Remote Backups With Rsync

Weakness and Security

Essential CVS

Spring Into Technical Writing

Other News:
Biodiesel Resources

Older News

Porting Windows IPC apps to Linux
(Fri Apr 22, 2005)

Migrate Win32 C/C++ Applications to Linux on Power
(Fri Apr 22, 2005)

Automating deployment with Subversion
(Wed Apr 20, 2005)

GPRS with NetBSD and SonyEricsson P910i
(Wed Apr 20, 2005)

OSDir.com Project of the Week: Quanta+
(Wed Apr 20, 2005)

The Bacula Philosophy
(Wed Apr 20, 2005)

File System Forensic Analysis
(Tue Apr 19, 2005)

Drag n Drop CD Ripping in Konqueror
(Tue Apr 19, 2005)

Tenor, The Context Link Engine
(Tue Apr 19, 2005)

Howto install FreeNX on Fedora Core 3
(Mon Apr 18, 2005)

Preliminary injunction against Fortinet UK Ltd.
(Mon Apr 18, 2005)

USENIX 2005 Report
(Mon Apr 18, 2005)

Data Brokers Reap the Whirlwind
(Mon Apr 18, 2005)

Professional Sound Editing with Audacity
(Fri Apr 15, 2005)

Using a Linux failover router
(Fri Apr 15, 2005)

Ten Mysteries of about:config
(Fri Apr 15, 2005)

Monitor Linux file system events with inotify
(Fri Apr 15, 2005)

Introduction to Python
(Thu Apr 14, 2005)

Using PHP instead of robots.txt
(Thu Apr 14, 2005)

Password overload
(Thu Apr 14, 2005)

Higher Order Functions
(Thu Apr 14, 2005)

Interview with Jamie Butler of HBGary
(Wed Apr 13, 2005)

Novice PC users more likely to embrace Linux
(Wed Apr 13, 2005)

Linux and Informix Dynamic Server
(Wed Apr 13, 2005)

Naturally occurring standards
(Wed Apr 13, 2005)

(Tue Apr 12, 2005)

Commands for Beginning System Admins
(Tue Apr 12, 2005)

Native Linux Gaming on the rise.
(Tue Apr 12, 2005)

Protect Your Firm Against the Newest Email Threats
(Tue Apr 12, 2005)

A parallel Linux backup script
(Mon Apr 11, 2005)

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Copyright 1999-2005 Noel Davis. Noel also runs web sites about sailing and kayaking.
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