Linux Learn Tips and Tricks

Find the HOWTO or step-by-step guide that you need right here.

 

Automating Security Audits with Lynis on Linux Systems

System security is a crucial aspect of Linux administration. Securing every aspect of the system can be difficult as soon as we have several software packages, user accounts, and settings. It is, therefore, important to use a script like&nb...
May 15, 2024
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Using Logwatch for Basic Security Monitoring on Linux

Linux systems log a great deal of information. Eac...
May 13, 2024
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Practical Examples: Understanding and Using the Sudo Command in Linux

The tutorial linked below will walk you through the bas...
May 13, 2024
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Discover How To Learn Tips And Tricks HOWTOs

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Are You Ready for Sarbanes-Oxley Compliance?

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Guardian Digital's "Achieving Compliance" white paper will serve as a resource to explain the mandates of Sarbanes-Oxley as it pertains to information technology and to further explain how Guardian Digital, the premier Internet and network security c

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The Honeynet Project

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The honeynet project is a group of security professionals dedicated to learning the tools, tactics, and motives of the blackhat community and sharing those lessons learned. The team collects this information on their own time with their own resources

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FreeBSD IPSec HOWTO

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This document is intended to be a primer on how to get IPsec on FreeBSD up and running, interoperating both with another FreeBSD (or NetBSD or any other KAME-derived stack) machine, and a Windows 2000 machine.

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Passive Aggressive

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Black hats use 'passive fingerprinting' to identify your operating system without you knowing it. But the technique is useful for white hats too. This article discusses those techniques used by Blakc/White hats and how you can prevent them.

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Play with the Lovely Netcat: Reinvent /usr/bin/yes

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The first but secondary purpose of this article is to introduce you this nifty networking tool: /usr/bin/netcat which is well available from the Debian GNU/Linux under the package name netcat. (The drill: apt-get install netcat and you're done.) Ther

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How to break out of a chroot() jail

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This page details how the chroot() system call can be used to provide an additional layer of security when running untrusted programs. It also details how this additional layer of security can be circumvented.

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Psudo root!

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This documentation discusses the features and security concerns of Sudo (superuser do). Sudo allows a system administrator to give certain users (or groups of users) the ability to run some (or all) commands as root or another user while logging the

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lsof -- List Open Files

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lsof is a tool to list all the open files on the system. From this information, processes creating network sockets can be found, among other things.

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Bastille Linux

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"The Bastille Hardening System attempts to 'harden' or 'tighten' Unix operating systems. It currently supports the Red Hat, Debian, Mandrake, SuSE and TurboLinux Linux distributions along with HP-UX and Mac OS X."

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Know Your Enemy - Learning with User-Mode Linux

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This paper describes step by step how to build a virtual Honeynet using free and OpenSource solutions. If you have ever wanted to work with Honeynet technologies, but could not afford the investment in multiple computers, now is your chance to try i

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