Jennifer Vesperman explains how to authenticate correctly and provides tips for avoiding common mistakes. Jennifer Vesperman explains how to use Squid, including a list of dos and don'ts to make it run faster. Chris Coleman explains how easy it is to start using BSD without giving up Linux. In the second part of this ongoing series, Carl Constantine shows you how to use tcpdump and Tripwire to protect your Linux server. In this first of a three-part series, Carl Constantine covers tools and techniques that system administrators can use to protect their networks, including discussion of nmap, Ethereal, and how to set up honey pots.
Firewalls can potentially block huge amounts of traffic.
Dru Lavigne shows us how to fine-tune our firewall logs to reveal the traffic that concerns us most. Log files collect data and grow in size. If you don't tend them, they will fill up all available disk space. Michael Lucas explains how to easily manage log files with newsyslog. Terry Dawson explains how dynamic IP address assignment works and helps you understand if it is right for your network.