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Search results for IPTABLES Explained Part 4: IPTables and Portsentry, the dynamic duo

Linux

Upstream Provider Woes? Point the Ping of Blame

Post date: April 14, 2005, 12:04 Category: Network Views: 2376 Comments
Tutorial quote: Your users are complaining that "the Internet is, like, all slow." Users are always complaining, but you're seeing a lot of timeouts when you check mail, surf the Web, or try to log in for remote administration. Or even worse, latency is so bad that you keep getting killed all to heck in your favorite gory violent online multi-player game, so you know there is a problem. But there a lot of potential bottlenecks between your PC and the outside world, like your Internet gateway, proxy server, firewall, Internet service provider, and so forth, so where do you begin?

One of the best and most versatile network tools you can have is a notebook PC running Linux. This lets you plug in anywhere to run tests and find out what is going on. Make it a nothing-to-lose box--don't keep data on it so you can wipe and reinstall the operating system as necessary, because you want to be able to run tests outside of firewalls. Don't run any services. You can put a minimal iptables firewall on it, as there is no point in being totally exposed, but keep it simple. (Use MondoRescue to make a system snapshot for fast restores.)
Debian

Rolling your own Debian packages (part 1)

Post date: January 21, 2006, 06:01 Category: Software Views: 2719 Comments
Tutorial quote: This two-part article explains how to make a Debian package of simple piece of software, presumably something you have written yourself. Although building a new package is more complex than rebuilding one or having one generated, the idea is that it is actually surprisingly simple to create basic Debian packages. In fact, if you can make software install into a temporary installation tree, you're already 90% done! This text provides a quick alternative to the more comprehensive Debian New Maintainers' Guide. Only knowledge of Makefiles and the basic Debian package tools is assumed.

The first part of this article will continue with some preliminary information about Debian packages. In the second part we walk through a concrete packaging example.
Linux

/etc/grub.conf explained

Post date: September 28, 2008, 09:09 Category: Software Views: 3581 Comments
Tutorial quote: The following example shows the structure of a GRUB menu file. The example installation has a Linux boot partition under /dev/sda5, a root partition under /dev/sda7, and a Windows installation under /dev/sda1.
CentOS

Installing The PHP-MemCache Module On CentOS 5.0

Post date: July 16, 2007, 23:07 Category: Optimizing Views: 6217 Comments
Tutorial quote: MemCached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. In this article I explain how you can very easily install it and make it avaible in PHP.
Debian

Manage Apache Resources Limits With mod_slotlimit

Post date: February 19, 2009, 08:02 Category: System Views: 2811 Comments
Tutorial quote: mod_slotlimit is an Apache module that using dynamic slot allocation algorithm and static rules, can manage resources used for each running site.
SuSe

Working with SUSE Linux Enterprise Server 9

Post date: June 22, 2005, 09:06 Category: System Views: 3438 Comments
Tutorial quote: Working with SUSE Linux Enterprise Server (SLES) requires an understanding of the login process, including local account files, system accounts, and managing identities.

Using a console shell or the graphical environment are two possible methods of working on a SLES machine.

Finding your way around a SLES installation requires an in-depth knowledge of the filesystem layout. Essential filesystem components are documented and explained in this chapter. Basic filesystem permissions are also described.
Ubuntu

Dual-Booting Windows XP/Vista And Ubuntu 7.04

Post date: July 21, 2007, 00:07 Category: Desktop Views: 4241 Comments
Tutorial quote: In this tutorial I will teach you how to dual-boot between Windows XP/Vista and Ubuntu. This tutorial will be split up into two parts: Part one for people who have no operating system installed. Part two for people who have Windows XP/Vista installed and do not want to re-install Windows.
Debian

Caching With Apache's mod_cache On Debian Etch

Post date: January 27, 2009, 12:01 Category: Installing Views: 2706 Comments
Tutorial quote: This article explains how you can cache your web site contents with Apache's mod_cache on Debian Etch. If you have a high-traffic dynamic web site that generates lots of database queries on each request, you can decrease the server load dramatically by caching your content for a few minutes or more (that depends on how often you update your content).
RedHat

My First Linux Server, Part 2

Post date: April 14, 2005, 22:04 Category: Miscellaneous Views: 3689 Comments
Tutorial quote: A file server is a specialized PC that holds large numbers of files that many people on a network can access. It "serves up" files to everyone instead of each person having files on his or her own PC. The good news is that you don't have to be a network guru to set up a basic file server. If you followed the Easy Linux Install steps in Part 1, you are ready to set up a Linux PC as a file server.

While there are many ways to set up a network and a server, this article concentrates on the simplest approaches with the highest chance of quick success.
OpenSUSE

SMILE - Slideshow video creator for Linux in openSUSE 11.0

Post date: August 20, 2008, 22:08 Category: Multimedia Views: 3816 Comments
Tutorial quote: SMILE, Slideshow Maker In Linux Environnement is a free opensource slideshow creating tool for GNU/Linux, although it also works on Mac OS/X. SMILE helps to create video slideshows from images, that can be played on almost all medias. The numerous features and the simplicity of use make it possible to create dynamic and rich slideshows in just a few clicks, without having to worry about technical issues or complicated settings.
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