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Knoppix Hacks: Use Knoppix to rescue Windows
In "Knoppix Hacks," author Kyle Rankin explains how the Knoppix CD can be used as an indispensable, multi-purpose tool for administrators. One of the many things Knoppix can accomplish is rescuing ...
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Put Knoppix in your toolbox: Hacks 37-51 from Knoppix H
Find out tools that can help you administer a network and secondly tools that can help you administer local hardware. Here, you will find tools that help you clone, wipe, and scan hard drives, and ...
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Hardening Linux: Firewall implementation
A poorly implemented firewall not only allows viruses to slip past your defenses -- it could lock you out of your host, according to James Turnbull, author of "Hardening Linux." Here, he explains h...
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Sharing files between Linux servers with NFS
Using the Network File System (NFS) allows you to share files on a network as if they were on your local drive. Ken Milberg shows you how in this tip.
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Put these troubleshooting tools in your toolbox
In this tip, Peter Harrison describes how to use Linux commands to get a quick fix on IT troublemakers
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Using Ethereal - Chapter 4 of Ethereal packet sniffing
This chapter from includes information about how to get started with Ethereal, exploring the main window, other window components, exploring the menus and using command-line options.
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Introducing network analysis
In the first chapter of Ethereal packet sniffing, the authors discuss what network analysis is, who uses it and how it works. They explain how to detect and protect against sniffers, and provide...
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Foreword to Ethereal packet sniffing
This excerpt is Jay Beale's introduction to Ethereal packet sniffing, part of his open source security book series. Here, he explains what Ethereal is and outlines the purpose behind his book.
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How Linux beats Windows in ID management ease
A Linux conversion may be your ticket away from the daily hassles of managing and licensing domain controllers and related software devices.
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Eliminating spam with SpamAssassin, DSPAM and ClamAV
James Turnbull explores the differences between three open source antispam tools and explains some best practices for using these products to secure your organization's e-mail and help stanch the f...
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How-to: Installing Scalix enterprise Linux e-mail
Step-by-step instructions for installing Scalix 9.2.
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How (and why) to turn a Linux server into a router
Author Peter Harrison explains why Linux can reduce the cost of routers and how to make that happen.
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Screen: The terminal baby-sitter in the sysadmin's tool
Use a single terminal window to run multiple applications -- with more flexibility than backgrounding allows you.
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Monitoring and detecting deviations
The selected chapter covers the details of physical monitoring devices and discusses how detection mechanisms work in physical-based detection systems.
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Binary arithmetic and bit operations
Chapter 3 explores arithmetic, logical and bit operations on binary data.
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Vulnerability assessment
Definition and discussion of vulnerability assessment, explaining different types of assessment and what to expect based on various approaches.
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An introduction to device drivers
This chapter introduces some background concepts about the Linux kernel and the special role that device drivers take on in the Linux kernel.
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Network gumshoe: Improving performance takes teamwork
Unclogging network bottlenecks can be tricky business, but assigning the right people to manage the task is a step in the right direction.
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Building and running modules
This chapter introduces all the essential concepts about modules and kernel programming.
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Ancient abbreviations in Linux
Courtesy of Unix developers' creativity, Linux contains a legacy of bizarre terms with a history all their own.
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Optimize system performance with Linux cgroups
The Linux cgroups feature lets you make a profile to manage resources to keep your system under control.
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Correct a GRUB error in short order
A GRUB error will stop a Linux server cold, but following these steps should get you back on track.
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Setting up a mirrored Linux DRBD configuration
Administrators can use the distributed replicated block device (DRBD) in Linux to set up basic data redundancy to connect the storage of multiple servers.
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Tune the Linux Ext4 file system for optimal performance
While Ext4 by default works fine for most people, follow these tips to tweak your servers to squeeze out even more speed.