Technical & Security

Booting Linux in Less Than 40 Seconds

Have you ever dreamt about booting Linux in less than one minute? Now this dream can come true: in less than 40 seconds after pressing the power button, you will have a perfect fully-functional operating system, exactly as you left the last session. Even better than you thought, right? Now you could say: "Crazy boy - I don't believe you!" Well then, check it out for yourself.

Troubleshooting Apache using strace

Occasionally system administrators can run into situations where the conventional way of troubleshooting an issue may not yield results. The conventional way means using test scripts, observing the log files, tweaking configuration settings and the like. In such cases, one will have to dig deeper into the internals of the server.

Installing Chilisoft on Linux

ASP is a server side scripting engine for dynamic web pages. ASP pages contain server-side scripts and HTML tags. As a Microsoft Technology, it works with Microsoft IIS webserver. You can't run ASP apps on other web servers like Apache, SUN Web Server, Zeus Web Server without using a special application such as ChiliASP or InstantASP.

Rule-based DoS attacks prevention shell script

In this article, I describe a simple rule-based DoS attack-prevention shell script. However, the proposed shell script is not a perfect tool for preventing DoS attacks, but a powerful tool for alleviating DoS attacks overheads of the Linux servers significantly.

IISCnfg.vbs - IIS Settings Replication

Microsoft provides a tool called IISCnfg for management of the Internet Information Services (IIS) Settings. One of the features that this includes is the ability to replicate the IIS settings from one server to another. This is useful in a webfarm environment where you require all web servers to be in sync.

Kernel Compilation

If you have decided to re-compile your kernel it essentially means that either the current kernel configuration does not fulfill your needs or your are upgrading to the latest kernel.I needed to upgrade my 2.4 to 2.6 for working with my Bluetooth dongle.

LAMP vs. LAMP Rematch

Two very popular and widely used languages for building dynamic web sites are Perl and PHP. They make up two thirds of the "P" in the Linux Apache, MySQL, Perl/PHP/Python (LAMP) stack. How does their performance, using mod_perl and mod_php, compare for everyday web programming? I attempted to find out.

MySQL Migration: MyISAM to InnoDB

The MySQL database is unique in that it offers multiple storage engines. The SQL parser and front end interfaces are separate from the storage engines. This lets you choose the low level table format that suits your application best.

Allowing Exactly the Right People to Send Email

If you need a solution to control email relaying, a program called Exact may be just what you need. Exact stands for EXperimental Access Control Thing. It is a POP-before-SMTP daemon that integrates with most email systems. Before getting into the details of setup and configuration, it is worth spending a little time discussing the somewhat esoteric problem it solves.

Hardening a Linux server in 10 minutes

Did you know that a freshly installed Linux server can be hardened in less than 10 minutes? Here’s how!

Lighttpd can lighten Apache's load

Is your Apache Web server slowing down under the weight of streaming media content or database-driven applications? Lighttpd, sometimes pronounced "Lighty," is a lightweight HTTP server that can help alleviate Apache's load by serving static content or CGI scripts. Since Lighttpd uses fewer resources per request than Apache alone, it can generally serve most static content faster than Apache. It also benefits from an actively developed FastCGI interface that performs true load balancing, giving you all the performance benefits of compiled into Apache modules such as PHP.

Deploying Ruby on Rails

This article is an introduction to the installation and deployment of Ruby on Rails.

Security: General Advices

Manny people think: "My machine cannot be hacked. There are so manny computers over internet, why would happen this to me? Also I've taken some security measures. It will not happend to me."

Backing up Windows machines using rsync and ssh

As all other unix tricks this is also the result of laziness and the need. I wanted to backup data on my windows laptop to a central linux/unix server. I didn't want all the features of available expensive backup solutions. Just a simple updated copy of my data on a central machine which is backed up to the tape daily. rsync is known for fast incremental transfer and was an obvious choice for the purpose.

Fedora Core 4 Linux Installation Notes

These instructions assume an i386 to i686 system (32 bit) with, an "always on" LAN or broadband connection configured "DHCP" and at least 10 GB of free disk space for the Fedora partition. Instructions for dual booting Windows and Fedora are included as well as as a section on setting up an nVidia GeForce graphics card. For the most part the steps should be followed in the order that they were written as certain programs should be installed and certain configurations made in order to facilitate later steps. However after the base installation is complete additional user selected program installations are, of course, optional.

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