How do you monitor the network when your client systems are connecting to secure web servers through HTTPS? We’ll show you how to keep watch using the Squid proxy server and share some inventive certificate tricks.

New vulnerabilities appear every day. To keep your network safe, you need to think like an attacker.

For its size, fail2ban, a utility that scans logfiles and bans suspicious IP addresses, punches well above its weight.

PortSentry monitors your ports and lets you know when they’ve been scanned.

Full release of BackTrack Linux 5 R2 is now available.

After toiling away to create a small but exclusive website, Charly wanted to run a security scanner against it to check for vulnerabilities. The choice of tools is enormous, but Charly chose w3af.

To celebrate 10 years of his column, Charly sets up a sensitive detector that measures the cosmic background radiation of the Internet.

The Anonymous Hacktivist group has been in many headlines this past year. Who are they? What did they attack? How do they communicate?