The Guide to IP Layer Network Administration with Linux


The Guide to IP Layer Network Administration with Linux was conceived as a project to document and provide examples for the use of Linux-specific IP networking tools.

The book includes coverage of the following topics: network address translation (NAT), address resolution protocol (ARP), routing, and masquerading. There is a nascent section on bridging, although the focus of the documentation is the use of layer 3 Linux technologies.

Tuning and Optimizing RHEL for Oracle 9i and 10g Databases


This article is a step by step guide for tuning and optimizing Red Hat Enterprise Linux on x86 and x86-64 platforms running Oracle 9i (32bit/64bit) and Oracle 10g (32bit/64bit) standalone and RAC databases. This guide covers Red Hat Enterprise Linux Advanced Server 3 and 4 and the older version 2.1. For instructions on installing Oracle 9i and 10g databases, see Oracle on Linux. Other Linux articles can be found at

Small Office Linux OpenVPN Server


I recently set up a CentOS Linux OpenVPN server for a small office, and this is a complete howto writeup of the process. These instructions contain everything you need for configuring the server (including firewall rules!). Also included are complete instructions for setting up both mac and windows client machines.

Debugging a weird linux server incoming network connection problem


I was recently stumped by an odd incoming network connection hang problem on a linux server. This is a writeup of how I troubleshot the issue and eventually fixed it.

Advance Linux Programming


Advanced Linux Programming is published under the Open Publication License, Version 1, no options exercised.

If you're a developer already experienced with programming for the GNU/Linux system, are experienced with another UNIX-like system and are interested in developing GNU/Linux software, or want to make the transition for a non-UNIX environment and are already familiar with the general principles of writing good software, this book is for you...

Linux Command Line Reference


Linux command line reference for common operations...

Linux Tips


A nice collection of linux tips and tricks...

Install & Configure IPplan IP Manager in openSUSE


IPplan is a free opensource IP Address management application. IPPlan is a web based IP address management software and tracking tool simplifying the administration of your IP address space. IPplan goes beyond IP address management including DNS administration, configuration file management, circuit management and storing of hardware information.

Highlight Domain & Subdomain for SSL websites in Firefox


When you visit a Secure website in Firefox chances are that the FavIcon for the website is replaced with a Green bar with the details of the company. This is because of the default properties in Firefox to display detailed information of the website from the Extended Validation Certificate on the website. However, if the website doesn’t host a Extended Validation certificate then the website URL (link) in the address bar is not highlighted or in otherwords shows as a normal website URL.

cutmp3 - Command Line MP3 Editor in openSUSE


cutmp3, as the name implies is a simple command line tool to edit and cut MP3 files without loosing any quality. cutmp3 can edit the mp3 files interactively or selection (start time and end time) can be provided from the command line or even better can be used with a timetable fiile specifiying different start/end times from the same MP3 files.