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Unix+clones

Chkrootkit Portsentry Howto

Post date: April 15, 2005, 23:04 Category: Security Views: 3315 Comments
Tutorial quote: This document describes how to install chkrootkit and portsentry. It should work (maybe with slight changes concerning paths etc.) on all *nix operating systems.

Chkrootkit "is a tool to locally check for signs of a rootkit" (from http://www.chkrootkit.org).

"The Sentry tools provide host-level security services for the Unix platform. PortSentry, Logcheck/LogSentry, and HostSentry protect against portscans, automate log file auditing, and detect suspicious login activity on a continuous basis" (from http://sourceforge.net/projects/sentrytools/).

This howto is meant as a practical guide.
Linux

Modify Your Partitions With GParted Without Losing Data

Post date: January 23, 2007, 23:01 Category: System Views: 4436 Comments
Tutorial quote: This article shows how you can modify the partitioning of your Linux system with GParted (Gnome Partition Editor) without losing data. This includes resizing partitions (enlarging and shrinking), moving partitions on the hard drive, creating and deleting partitions, and even modifying filesystem types. GParted is a free partition editor available as a desktop program and also as a Live-CD. It supports the following filesystems: ext2, ext3, fat16, fat32, hfs, hfs+, jfs, linux-swap, reiserfs, reiser4, ufs, xfs, and even ntfs (Windows).
Linux

A Beginner's Guide To LVM

Post date: January 16, 2007, 19:01 Category: System Views: 4599 Comments
Tutorial quote: This guide shows how to work with LVM (Logical Volume Management) on Linux. It also describes how to use LVM together with RAID1 in an extra chapter. As LVM is a rather abstract topic, this article comes with a Debian Etch VMware image that you can download and start, and on that Debian Etch system you can run all the commands I execute here and compare your results with mine. Through this practical approach you should get used to LVM very fast.
Unix+clones

CLI Magic: OpenSSH + Bash

Post date: January 25, 2006, 20:01 Category: Network Views: 3483 Comments
Tutorial quote: As a system administrator, I have used OpenSSH's piping abilities more times than I can remember. The typical ssh call gets me access to systems for administration with a proven identity, but ssh is capable of so much more. In combination with bash's subshell invocation, OpenSSH can distribute the heavy work, reduce trace interference on a system under test, and make other "impossible" tasks possible. I've even used it to make Microsoft Windows remote administration easier.

In the examples below, I have tried to avoid GNU-specific idioms for tools which have non-GNU counterparts. This practice improves portability of shell scripts in heterogeneous environments.
Ubuntu

How to Remove Pulse Audio Ubuntu 8.10 (Intrepid Ibex)

Post date: April 6, 2009, 06:04 Category: System Views: 4150 Comments
Tutorial quote: PulseAudio (formerly PolypAudio) is a cross-platform, networked sound server project. It is intended to be an improved drop-in replacement for the Enlightened Sound Daemon (ESD).By default Ubuntu 8.10 comes with Pulse Audio and most users start complaining about pulse audio so if you donít want to use Pulse Audio you can remove.

Linux

Key-Based SSH Logins With PuTTY

Post date: December 10, 2006, 20:12 Category: Security Views: 4105 Comments
Tutorial quote: This guide describes how to generate and use a private/public key pair to log in to a remote system with SSH using PuTTY. PuTTY is an SSH client that is available for Windows and Linux (although it is more common on Windows systems). Using key-based SSH logins, you can disable the normal username/password login procedure which means that only people with a valid private/public key pair can log in. That way, there is no way for brute-force attacks to be successful, so your system is more secure.
Ubuntu

How To Configure Remote Access To Your Ubuntu Desktop

Post date: February 14, 2008, 13:02 Category: Desktop Views: 4582 Comments
Tutorial quote: This guide explains how you can enable a remote desktop on an Ubuntu desktop so that you can access and control it remotely. This makes sense for example if you have customers that are not very tech-savvy. If they have a problem, you can log in to their desktops without the need to drive to their location. I will also show how to access the remote Ubuntu desktop from a Windows XP client and an Ubuntu client.
Debian

Rolling your own Debian packages (part 1)

Post date: January 21, 2006, 06:01 Category: Software Views: 3291 Comments
Tutorial quote: This two-part article explains how to make a Debian package of simple piece of software, presumably something you have written yourself. Although building a new package is more complex than rebuilding one or having one generated, the idea is that it is actually surprisingly simple to create basic Debian packages. In fact, if you can make software install into a temporary installation tree, you're already 90% done! This text provides a quick alternative to the more comprehensive Debian New Maintainers' Guide. Only knowledge of Makefiles and the basic Debian package tools is assumed.

The first part of this article will continue with some preliminary information about Debian packages. In the second part we walk through a concrete packaging example.
Unix+clones

Using and Customizing Templates in OpenOffice.org

Post date: October 24, 2006, 17:10 Category: Software Views: 3541 Comments
Tutorial quote: Templates make life easier when you use them for letters, documents, brochures, etc. but they really make life easier when you use them for labels. This article is about how to use the OpenOffice.org templates, in particular the WorldLabel templates, to print the labels you need. It shows how to download them, install them, use them as they are, and how to customize them with graphics and other features. It also shows how to use the OpenOffice.org label wizard; you can use the label wizard each time, or save the template you create in the same template repository with your WorldLabel templates.
Debian

Adding Disclaimers To Outgoing Emails With alterMIME (Postfix On Debian Lenny)

Post date: September 21, 2010, 18:09 Category: Installing Views: 11757 Comments
Tutorial quote: This tutorial shows how to install and use alterMIME. alterMIME is a tool that can automatically add a disclaimer to emails. In this article I will explain how to install it as a Postfix filter on Debian Lenny.
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