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Simultaneous  

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Cl uster filesystems such as GFS2 and OCFS2 allow many clients simultaneous access to a storage device. Along with DRBD and Pacemaker, this offers a low-budget option for creating a redundant service – but you need to watch out for a couple of pitfalls.

Sniff Test  

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Tcpdump is a general-purpose packet sniffer and incident response tool that should be in your toolshed.

2026

To the Rescue  

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Knoppix boots from the DVD drive and comes with a collection of powerful troubleshooting tools. Knoppix creator Klaus Knopper counts down his favorite rescue utilities.

Remote Control  

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Keep track of your job when you're not in the office.

Through the Gate  

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Conventional VoIP telephony doesn't provide for the complications of a firewall. The STUN protocol is the standard fix, but sometimes STUN just isn't enough.

Inspector  

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You need to lock doors to keep criminals out. Intelligent tools such as port and security scanners reveal potential vulnerabilities and help you keep the computers on your network safe from attackers.

Ticket Takers  

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Providing the necessary IT services to your employees or customers is more than simply logging tickets and keeping track of hardware. We compare several ITIL-compliant help desk packages.

Store and Find  

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Email archiving involves more than just backing up your email directories. It is also a question of classifying the email and making it easier for users to find their way around overfilled email folders.

Apache Protector  

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Even securely configured and patched web servers can be compromised because of vulnerabilities in a web application. ModSecurity is an Apache extension that acts as a web application firewall to protect the web server against attacks.

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