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Debian

Stack Smashing Protection for Debian

Post date: June 23, 2006, 22:06 Category: Security Views: 2848 Comments
Tutorial quote: Since we last covered the use of Stack Smashing Protection (SSP) the default compiler for Debian Sid has been upgraded to include it, with no need for custom patching. Read on for a brief demonstration of how it can be used to prevent attacks.

The default C compiler for Sid, which will be used in Etch too, is GCC v4.1. This releasecontains the SSP patch which previously needed to be applied manually (we demonstrated applying this patch for GCC v3.4 a long time ago).

Since the SSP patch is included in the compiler by default it is suddenly a lot easier to start working with it.
Debian

Creating A Fully Encrypted Para-Virtualised Xen Guest System Using Debian Lenny

Post date: May 3, 2009, 10:05 Category: Miscellaneous Views: 3383 Comments
Tutorial quote: This document explains how to set up a fully encrypted para-virtualized XEN instance. In this howto, the host system is running Debian Etch, while the guest system to be installed will be using Debian Lenny. If you are concerned about your privacy, you might want to consider using hard disk encryption to protect your valuable private data from spying eyes. Usually, the easiest way would be to use your distribution's installer to set up a fully encrypted system; I think most recent Linux distributions support this. However, when you are using XEN to provide virtualization, there are situations where you might not want to encrypt your whole computer with all guest instances, but instead only encrypt one OS instance. This howto will deal with exactly this situation. It assumes that the XEN host system is already up and running.
Unix+clones

Hide your folders in KDE

Post date: November 11, 2007, 05:11 Category: Desktop Views: 3083 Comments
Tutorial quote: Want to keep your MP3s away from your boss’ or big brother’s view? Of course, in Linux anything that starts with a period is “suppose” to be hidden; but all we have to do is type “ls -A” or turn on the viewing of hidden files in KDE…not too hard. Basically what we can do is set a transparent PNG as our folder icon, and rename our folder with a ” “(space). This will actually keep the previous name of the folder.Also we will keep anyone out of the folder that doesn’t know Linux commands, and doesn’t know exactly where we have placed the icon. This works GREAT for the desktop.
OpenSUSE

Perfect Paper Passwords - One Time Password System (OpenSuse)

Post date: April 20, 2009, 09:04 Category: Security Views: 3587 Comments
Tutorial quote: Almost without exception, today's Internet users prove their identity online using a fixed account name and password. In the past, this simple system provided sufficient security. But with the growing popularity of online banking and eCommerce, the value of stealing online identities has skyrocketed. And the increasing presence and "spyware" and "malware" on innocent users' computers means that users can be "watched" while logging onto their banking and other eCommerce sites. Once their logon credentials have been "captured" and stolen, Internet criminals can easily assume their identity.
Debian

Triggering Commands On File/Directory Changes With Incron

Post date: September 2, 2008, 09:09 Category: Miscellaneous Views: 3461 Comments
Tutorial quote: This guide shows how you can install and use incron on a Debian Etch system. Incron is similar to cron, but instead of running commands based on time, it can trigger commands when file or directory events occur (e.g. a file modification, changes of permissions, etc.).
Debian

Filesystems (ext3, reiser, xfs, jfs) comparison on Debian Etch

Post date: April 23, 2006, 08:04 Category: Benchmarks Views: 5778 Comments
Tutorial quote: There are a lot of Linux filesystems comparisons available but most of them are anecdotal, based on artificial tasks or completed under older kernels. This benchmark essay is based on 11 real-world tasks appropriate for a file server with older generation hardware (Pentium II/III, EIDE hard-drive).
Debian

Virtual Hosting With Proftpd And MySQL (Incl. Quota) On Debian Etch

Post date: April 27, 2007, 23:04 Category: Installing Views: 2799 Comments
Tutorial quote: This document describes how to install a Proftpd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. In addition to that I will show the use of quota with this setup.
Debian

Apache: Creating A Session-Aware Loadbalancer Using mod_proxy_balancer (Debian Etch)

Post date: May 29, 2007, 22:05 Category: System Views: 3807 Comments
Tutorial quote: mod_proxy_balancer is an Apache module that lets you create a loadbalancer. This loadbalancer retrieves requested pages from two or more backend webservers and delivers them to the user's computer. An important feature of mod_proxy_balancer is that it keeps track of sessions so that a single user always deals with the same backend webserver.
Debian

Benchmark: Apache2 vs. Lighttpd (Static HTML Files)

Post date: September 21, 2008, 12:09 Category: Benchmarks Views: 5697 Comments
Tutorial quote: This benchmark shows how Apache2 (version 2.2.3) and lighttpd (version 1.4.13) perform compared to each other when delivering a static HTML file (about 50KB in size). This benchmark was created with the help of ab (Apache benchmark) on a VMware vm (Debian Etch); if you try this yourself, your numbers might differ (depending on your hardware), but the tendency should be the same.
Debian

How To Install And Use The djbdns Name Server On Debian Etch

Post date: January 24, 2008, 11:01 Category: Installing Views: 3010 Comments
Tutorial quote: djbdns is a very secure suite of DNS tools that consists out of multiple parts: dnscache, a DNS cache that can be used in /etc/resolv.conf instead of your ISP's name servers and that tries to sort out wrong (malicious) DNS answers; axfrdns, a service that runs on the master DNS server and to which the slaves connect for zone transfers; and tinydns, the actual DNS server, a very secure replacement for BIND.
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