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A quick gpg HOWTO for getting started with GnuPG.

This modified rblsmtpd features parameter-enabled syslog-based RBL server and source-IP logging.

Review the FAQ for the compile, install and testing...

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.

Unity provides a complete, simple, touch-ready environment that integrations your applications and your workflow.Unity is designed for netbooks and related touch-based devices. It includes a new panel and application launcher that makes it fast and easy to access preferred applications, such as the browser, while removing screen elements that are rarely used in mobile and netbook computing.This tutorial will explain how to run unity under virtualbox.

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 www.puschitz.com...

Java was developed with an eye toward platform independence, freeing the software developer from the unpleasant and tedious task of cross-platform porting and testing of software. All too often, however, developers are not able to write completely new applications, but have to interface to existing legacy software and operating systems. This poses a problem as Java cannot make use of many utilities and system-dependent features that these programs have relied upon in the past...

Pinguy OS an out-of-the-box working operating system for everyone, not just geeks.This OS is for people that have
never used Linux before or for people that just want an out-of-the-box working OS without doing all the tweaks and enhancements that everyone seems to do when installing a fresh copy of Ubuntu or other Linux based Distro's.

Dive Into Python is a Python book for experienced programmers. You can buy a printed copy, read it online, or download it in a variety of formats. It is also available in multiple languages...

XScreenSaver is the standard screen saver collection shipped on most Linux and Unix systems running the X11 Window System.On X11 systems, XScreenSaver is two things: it is both a large collection of screen savers; and it is also the framework for blanking and locking the screen.

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.