Articles by Carla Schroder 

VoIPowering Your Office: PBX in a Flash´┐ŻLean, Mean Asterisk Machine

Asterisk adaptations continue to proliferate. Here's a new one, created and maintained by seasoned open-source gurus.

Tips for Taming SELinux

SELinux prepares you for tomorrow's threats, but to reap its rewards you have to understand the MAC security model.

Master iptables with GUI Firewall Builders

Configuring a Linux firewall can be a real chore, but with these graphical tools you can protect your network and learn by example at the same time.

Ubuntu Server: Good Concept, Flawed Execution

Considering the Ubuntu pedigree, you might expect this to be "Debian for the rest of us." That's true, as long as "the rest of us" know what we're doing. Give it a spin, says our reviewer, but do so with care.

VoIPowering Your Office: Swatting NATs with IAX, Part 2

While there are (practically) no IAX-compliant hard phones in existence, there are some viable alternatives.

Ubuntu Server: Considering Kernel Configuration

Ubuntu's Gutsy Gibbon (7.10) server edition provides server and desktop kernels. What's the diff, and what do all those options mean?

VoIPowering Your Office: Defeat the Pesky NATs of VoIP With IAX

Though not as popular as SIP, Asterisk's native protocol makes some of the thornier firewall-related issues magically disappear.

Ubuntu Server: Attractive Choice, Paltry Documentation

Ubuntu's server edition answers old charges about the lack of an integrated server stack in Linux, but it frustrates with skimpy documentation. (First of two parts.)

VoIPowering Your Office: Roaming the VoIP Wi-Fi World

Today's handsets are up to the task, but availability of local service is still spotty at best.

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