Go back to fronty page View most popular entries View latest additions Submit tutorials to UnixTutorials.info
UnixTutorials logo

Linux tutorials
Linux

iptables: The Linux Firewall Administration Program

Post date: November 29, 2005, 20:11 Category: Network Views: 3409 Comments
Tutorial quote: This chapter covers the iptables firewall administration program used to build a Netfilter firewall. For those of you who are familiar with or accustomed to the older ipfwadm and ipchains programs used with the IPFW technology, iptables will look very similar to those programs. However, it is much more feature-rich and flexible, and it is very different on subtle levels.
Linux

Enhancing kernel security with grsecurity

Post date: November 25, 2005, 21:11 Category: Security Views: 3578 Comments
Tutorial quote: Is your server as secure as it could be? Sure, you use a firewall, mandate strong passwords, and patch regularly. You even take a proactive approach by performing security audits with tools such as nmap and Nessus. Yet you may still be vulnerable to zero-day exploits and privilege escalation attacks. If these possibilities keep you awake at night, you're not alone. The sleepless folks with the grsecurity project have developed an easy-to-use set of security enhancements to help put your fears to rest.
Linux

Building a Linux video jukebox for an anime convention

Post date: November 25, 2005, 21:11 Category: Miscellaneous Views: 3618 Comments
Tutorial quote: I wrote this little whitepaper a while back for Amy Zunk to document the function of the VideoKeg/VideoJukebox boxes. Documented here for posterity. The primary goal of the video keg was to build a reliable video box that was easy to transport with enough space to store 3 days worth of Anime fan-subs.

The secondary goal of the video keg was to make a home PVR system for video playback and time-shifting, along with a video arcade and perhaps a web browser. The tertiary goal of the video keg was to find an affordable hardware platform so that we could buy 4 of them immmediately to service the primary goal's need for 4 separate video rooms.

For a PVR, the machine neeed to be small, quiet, low-heat, and still fast enough to run the software video player and arcade games. For portability, we decided to go with a smaller mini-ITX style cube box.
Linux

The Beginners Linux Guide

Post date: November 24, 2005, 23:11 Category: Miscellaneous Views: 3310 Comments
Tutorial quote: A work in progress "The Beginners Linux Guide".
Linux

Enabling S.M.A.R.T for SATA disks

Post date: October 10, 2005, 12:10 Category: System Views: 3333 Comments
Tutorial quote: This very short tutorial shows you how to enable S.M.A.R.T reporting for SATA disks on 2.6 linux kernel.
Linux

Translating DOS to Linux

Post date: September 29, 2005, 17:09 Category: Miscellaneous Views: 3129 Comments
Tutorial quote: So you know DOS. You're used to it, and it makes you feel warm and fuzzy. Snap out of it. This page is a list of Linux commands and they're DOS cousins, so you can feel more comfortable navigating in the Linux world, though you might have already known some of these commands if you've ever used an FTP client.
Linux

Filesystem snapshots with unionfs

Post date: July 2, 2005, 01:07 Category: System Views: 3387 Comments
Tutorial quote: Many times, you need to know how a certain filesystem looked like at some point in time, and you want to be able to roll back changes that happened to it after that point. While there are multiple solutions to achieve this goal, certainly one of them is to use filesystem snapshots.
Linux

Linux Filesystems and Partitioning: A Primer

Post date: June 24, 2005, 14:06 Category: System Views: 3217 Comments
Tutorial quote: We recently to shed some light on Linux, particularly for users unfamiliar with the system. The article received quite a response from around the world and so we will be doing some follow-up articles to teach all those interested, the ins and outs of Linux. In this article, we will be discussing what partitioning is, how to choose a filesystem, how to have Windows and Linux installed on your hard drive at the same time, and more.
Linux

Hardening Linux: a 10 step approach to a secure server

Post date: June 22, 2005, 10:06 Category: Security Views: 4187 Comments
Tutorial quote: The Internet has become a far more dangerous place than it was 20 years ago. Nowadays, Operating System and application security is an integral part of a server configuration and, while firewalls are very important, they are not the panacea.

This list of steps is intended as a guideline with a practical approach. We’ll try to provide a complete picture without getting into unnecesary details. This list won’t replace a good book on secure systems administration, but it will be useful as a quick guide.

Before we get started it’s worth to mention that security is not a status: it’s just a process. The correct initial setup of the server only provides a good start and helps you get half the way through. But you actually need to walk the other half of the road, by providing proper security vigilance, monitoring and updating.
Linux

The Linux /proc Filesystem as a Programmers' Tool

Post date: June 22, 2005, 09:06 Category: Programming Views: 4027 Comments
Tutorial quote: My entry into systems programming was guided by my desire to understand further the operating systems I was working with daily as a contract UNIX and, later, Linux system administrator. The result of this was ifchk, a packet sniffer detector I wrote in C and released in June of 2003. ifchk initially was written under IRIX and then ported to Linux, mostly under the 2.4 kernel. The current ifchk revision, beta 4, recently was released and beta 5 is on the way.

My work on ifchk has allowed me to examine programmatically several areas of operating system functionality. Examples include the Linux netlink(7) and rtnetlink(7) facilities, device control--that is, network interfaces--via ioctl(2), signals and proc, the process filesystem. Proc and its ability to display a wide array of data concerning the runtime state of a system are the focus of our discussion here.
Web-based applications and online marketing solutions - LumoLink