Security

Paranoid Penguin - DNS Cache Poisoning, Part II: DNSSEC Validation

Configure your DNS server to check zone signatures using DNSSEC. more>>

Linux Distro: Tails - You Can Never Be Too Paranoid

Tails is a live media Linux distro designed boot into a highly secure desktop environment. You may remember that we looked at a US government distro with similar aims a few months ago, but Tails is different because it is aimed at the privacy conscious “normal user” rather than government workers. more>>

Virtual Security: Combating Actual Threats

Learn how to secure your virtual environment from every angle. more>>
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Live-Fire Security Testing with Armitage and Metasploit

Armitage and Metasploit let you attack your network like skilled criminals. Use these attacks to evaluate your security posture. more>>

Paranoid Penguin - DNS Cache Poisoning, Part I

Understand and defend against DNS cache poisoning. more>>

Build a Better Firewall-Linux HA Firewall Tutorial

Tired of maintaining your expensive commercial firewalls? Check out how combining Firewall Builder with a Linux HA firewall pair can provide a big solution at a low price. more>>

Security Monitoring and Enforcement with Cfengine 3

Cfengine is well known as a powerful system configuration management tool, but did you know you also can use it to secure your systems? more>>

Interview with a Ninja, Part II

Mick continues chatting with a figurative and literal hacker ninja. more>>

Interview with a Ninja, Part I

Mick chats with a highly skilled, highly ethical system cracker. more>>

Back from the Dead: Simple Bash for complex DdoS

If you work for a company with an online presence long enough, you'll deal with it eventually. Someone, out of malice, boredom, pathology, or some combination of all three, will target your company's online presence and resources for attack. more>>

Building a Transparent Firewall with Linux, Part V

Build a transparent firewall using an ordinary PC. more>>

Introduction to Forensics - A Report from Southwest Drupal Summit

What do you do once you realize one of your servers has been compromised? I recently had the opportunity to hear Linux Journal's own Kyle Rankin give a very impressive talk covering this situation at the Southwest Drupal Summit in Houston, Texas. more>>

Building a Transparent Firewall with Linux, Part IV

Arm your stealth firewall with a custom iptables script. more>>

Building a Transparent Firewall with Linux, Part III

Hack your cheap wireless gateway into a stealth firewall. more>>

Hack and / - Some Hacks from DEF CON

What happens when a sysadmin goes to a hacker conference? He gets a fresh perspective on computer security. more>>
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