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Building Unix Tools with Ruby Publish Date: Sep. 18, 2003
Unix command line tools should follow a few simple rules. They must do one thing well. They should conform to standard option conventions. They must be able to be part of a pipeline. Jacek Artymiak demonstrates a simple Unix CSV-parsing utility built in the Ruby programming language.
Changes in pf: Packet Filtering Publish Date: Jun. 26, 2003
OpenBSD's packet filter has really grown up. Since its introduction in OpenBSD 3.0, it's become an advanced tool for networking and security. In the third of four articles, Jacek Artymiak explores new options for packet filtering with pf in OpenBSD 3.2, after NAT and redirection have taken place.
REALbasic Tricks: Shell and cURL Publish Date: Jun. 17, 2003
Limiting yourself to one development environment isn't always the most efficient way to work. Jacek Artymiak shows you how to mix RealBasic code with shell tools on Mac OS X.
Introduction to Programming with Managed DirectX 9.0 Publish Date: Jun. 2, 2003
The industry standard 3D API, OpenGL, is not the only 3D API that you can use on the .NET platform in the Microsoft Windows environment. Another choice is DirectX, which has been steadily increasing its functionality, stability, and market share among developers writing all sorts of Windows multimedia software, games, and other applications that make use of 2D and 3D graphics. Jacek Artymiak shows you how to write 3D applications using the Managed Interface to DirectX 9.0.
Changes in pf: More on NAT Publish Date: May. 8, 2003
OpenBSD's packet filter has really grown up. Since its introduction in OpenBSD 3.0, it has become an advanced tool for networking and security. In the second of four articles, Jacek Artymiak presents a sample NAT and DMZ ruleset that is easily customized.
Using OpenGL with VB.NET Publish Date: Apr. 28, 2003
Although VB.NET is not the first programming language that comes to mind when you are thinking of writing applications that use the OpenGL API, it is possible (and not that difficult), if you are willing to dip your toes in the warm waters of open source software. In this article, Jacek Artymiak shows you how to use OpenGL in your own .NET apps.
NAT with pf Publish Date: Mar. 6, 2003
OpenBSD's packet filter has really grown up. Since its introduction in OpenBSD 3.0, it has become an advanced tool for networking and security. In the first of four articles, Jacek Artymiak examines recent updates to pf. This week, he looks at Network Address Translation.
Patching OpenBSD Publish Date: Jan. 16, 2003
The nice thing about software is that you can patch it to fix problems. The tricky thing about software is that you have to patch it to fix problems. Your systems are only as secure as your patching strategy allows. Jacek Artymiak explains how to apply patches to your OpenBSD machines.
Downloading Files from Behind the Firewall Publish Date: Dec. 19, 2002
Securing your network often means saying "no" to some user requests and "try this instead" to others. Instead of punching holes in your firewall, can you educate your users to use better tools? Jacek Artymiak describes effective downloading utilities, and strategies to promote them.
TRUSTSECURE 2002 Report Publish Date: Nov. 14, 2002
TRUSTSECURE 2002, the Polish IT security conference, brought together some of the brightest minds in security today. Jacek Artymiak was there. In the latest installment of his Securing Small Networks with OpenBSD column, he summarizes the highlights and puts on his prediction hat.
Simple Things to Improve Your System's Security Publish Date: Oct. 31, 2002
Jacek Artymiak returns with a grab bag of simple ways to enhance the security of your system. These techniques apply to OpenBSD in specific, the BSDs in general, and most Unixes.
Managing Advanced PF Logs Publish Date: Aug. 22, 2002
Jacek Artymaik shows us how to implement a Perl script that reads pf logs from the pflog fifo pipe, archives logs on the monitoring firewall, and sends them to another fifo pipe so that log analysis software can pick them up for analysis.
Securing Remote PF Firewall Logs Publish Date: Aug. 8, 2002
Jacek Artymiak shows us how to improve the security of remotely logged firewall logs and how to calculate how much storage space we need to keep a reasonable amount of logs for convenient analysis.
Flash on Mobile and Embedded Devices Publish Date: Aug. 2, 2002
Flash has been popular on the Web for years, but now the player is also available on mobile and embedded devices, including the Pocket PC, Sony PlayStation 2, Nokia 9200 mobile phone, and more. This means that the "mobile Flash market" is now big enough to interest developers who had stayed clear in the past. Here's how to get your feet wet.
Archiving PF Firewall Logs Publish Date: Jul. 25, 2002
Jacek Artymiak tackles automating the transfer of logs from the firewall to one of the workstations connected to the internal private network segment.
