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Debian

How To Set Up Software RAID1 On A Running LVM System (Debian Squeeze)

Post date: June 15, 2011, 09:06 Category: Miscellaneous Views: 2196 Comments
Tutorial quote: This guide explains how to set up software RAID1 on an already running LVM system (Debian Squeeze). The GRUB2 bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails (no matter which one).
Debian

Giving your Xen instances a working X setup

Post date: January 3, 2006, 04:01 Category: Software Views: 2650 Comments
Tutorial quote: Xen, the virtualisation system, is a great tool for running fresh copies of an operating system. However it doesn't allow you to run X11 programs. Here we can fix that with the help of VNC.
Debian

Using the 'snort' Intrusion Detection System

Post date: December 27, 2005, 15:12 Category: Security Views: 4732 Comments
Tutorial quote: Snort is the leading open source Network Intrusion Detection System and is a valuable addition to the security framework at any site. Even if you are employing lots of preventative measures, such as firewalling, patching, etc., a detection system can give you an assurance that your defences truly are effective, or if not, will give you valuable information about what you need to improve.

Fortunately, there is a good set of snort packages for Debian which takes a lot of the tedious work out of building a useful Network Intrusion Detection System. Before we start on installation, we should review a few details about the networking satack that you're going to need to make sense of the alerts snort will generate. Impatient readers and those who are familiar with the TCP/IP suite of protocols may do now skip to the bit that says Stand alone snort.
Ubuntu

Perfect Setup Of Snort + Base + PostgreSQL On Ubuntu 6.06 LTS

Post date: April 25, 2007, 21:04 Category: Installing Views: 3988 Comments
Tutorial quote: This tutorial describes how you can install and configure the Snort IDS (intrusion detection system) and BASE (Basic Analysis and Security Engine) on an Ubuntu 6.06 (Dapper Drake) system. With the help of Snort and BASE, you can monitor your system - with BASE you can perform analysis of intrusions that Snort has detected on your network. Snort will use a PostgreSQL database to store/log the data it gathers.
Linux

The PartImage Handbook

Post date: May 21, 2005, 15:05 Category: Software Views: 2542 Comments
Tutorial quote: - Partition Image is a Linux/UNIX partition imaging utility: it saves partitions formatted using the Ext2FS (the linux standard), ReiserFS (a new journaled and powerful file system), JFS IBM journaled file systems from AIX, NTFS (Windows NT File System), FAT16/32 (DOS & Windows file systems), or HPFS (OS/2 file system) file system formats to an image file. Only used blocks are copied. The image file can be compressed in the GZIP/BZIP2 formats to save disk space, and split into multiple files to be copied on removable media (ZIP for example), or burned on a CD-R ...

- This allows the user to save a full Linux/Windows system, with a single operation. When problems occur (viruses, crash, error, ...), you just have to restore, and after several minutes, all your system is restored (boot, files, ...), and fully working.

- This is very useful when installing the same software on many machines: just install one of them, create an image, and then restore the image on all other machines. After the first one, each subsequent installation can be made automaticaly, and only requires a few minutes.
OpenSUSE

Write your own kernel module and insert it into running kernel

Post date: January 12, 2009, 08:01 Category: Programming Views: 4516 Comments
Tutorial quote: So, you want to write a kernel module. You know C, you've written a few normal programs to run as processes, and now you want to get to where the real action is, to where a single wild pointer can wipe out your file system and a core dump means a reboot.

kernel Modules are pieces of code that can be loaded and unloaded into the kernel upon demand. They extend the functionality of the kernel without the need to reboot the system. For example, one type of module is the device driver, which allows the kernel to access hardware connected to the system.
Debian

How To Set Up Software RAID1 On A Running LVM System (Incl. GRUB Configuration) (Debian Etch)

Post date: March 25, 2008, 10:03 Category: System Views: 3230 Comments
Tutorial quote: This guide explains how to set up software RAID1 on an already running LVM system (Debian Etch). The GRUB bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails (no matter which one).
Linux

Setting up a serial console

Post date: February 19, 2007, 19:02 Category: Miscellaneous Views: 3501 Comments
Tutorial quote: This tutorial will show you how to set up a serial console on a Linux system, and connect to it via a null modem cable. This is quite useful if your Linux server is in a headless configuration (no keyboard or monitor), as it allows you to easily get a console on the system if there are any problems with it (especially network problems, when SSH is not available). In the end, the GRUB menu will appear over the serial link, as will the bootup messages (output when booting the system). I am using Debian Etch on the server and Ubuntu Edgy on my client, although this should work on any Linux distribution.
OpenBSD

Apache - Serving up the Web

Post date: April 11, 2006, 22:04 Category: Network Views: 7318 Comments
Tutorial quote: The Apache Web Server is installed as part of the OpenBSD base system. This guide will help you configure the web server: (Apache 1.3.12 is released with OpenBSD 2.7 and 1.3.9 with OpenBSD 2.6)

To see how configurable the Apache/OpenBSD combination is we also look at allowing administrators to remotely review the server's status, we setup the system so we allow users on our system to have their own personal web-space. Of course, for the security counscious you probably want to turn some of these things off after you get things up and running.
Debian

Using The Bazaar Version Control System (VCS) On Debian Etch

Post date: January 22, 2008, 11:01 Category: Miscellaneous Views: 3242 Comments
Tutorial quote: Bazaar is a distributed version control system (VCS) available under the GPL; it is similar to Subversion (svn). Bazaar is sponsored by Canonical, Ltd., the company that develops the Ubuntu Linux distribution, and therefore the Ubuntu project is the most prominent user of Bazaar. This article explains how to set up and use Bazaar on a Debian Etch system, and how to configure an SFTP-/HTTP server to host your Bazaar repository.
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