I've written a few technical articles which were published on the O'reilly Network. Below are the links to these articles as they are published.
Articles:
Company-Wide Instant Messaging with Jabberd
Instant messaging is becoming as valuable a business tool as email, the telephone, or the computer. While public networks are free (but not under your control) and private installations are under your control (but expensive), you can easily run your own secure, free server using the open standards of the Jabber protocol. Oktay Altunergil shows how to install and configure jabberd and to integrate it into an existing business directory system. Oct. 6, 2005
Bayesian Filtering with bogofilter and Sylpheed Claws
Spam's not just a theft of resources, it's also highly annoying. Fortunately, probability filters can distinguish between good and bad messages with stunning accuracy. Oktay Altunergil explains bogofilter, a popular filtering package and how to integrate it with the Sylpheed Claws mail agent. Jan. 30, 2003
Nagios, Part 2
Oktay Altunergil walks us through the configuration of Nagios after its been set up. Sep. 26, 2002
Installing Nagios
Nagios is a system and network monitoring application. It watches hosts and services that you specify, alerting you when things go bad and when they get better. Sep. 5, 2002
Scanning for Rootkits
When a hacker gets access to your system, he will leave himself an easy way back in, called a rootkit. Oktay Altunergil shows us how to detect rootkits and remove them. Feb. 7, 2002
Easing Web Application Development with CVS
CVS can be a valuable tool when developing Web applications. Oktay Altunergil explains how and why to use it. Jan. 24, 2002
Understanding Rootkits
Hackers have many tools that allow them to remain undetected during an attack. Understanding these tools is key to recognizing and cleaning up after an attack. Dec. 14, 2001
Introducing Sylpheed
Need a responsive, open source replacement for Outlook? The Sylpheed email client may be just what you need. Dec. 6, 2001