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Linux

Building an LDAP Server on Linux, Part 2

Post date: April 15, 2005, 17:04 Category: Network Views: 3875 Comments
Tutorial quote: Welcome back! In Part 1 we learned basic concepts of LDAP and the uses for an LDAP server. Today we'll install and configure an OpenLDAP directory.

A quick note before we get started: this is LDAP 101. We are not installing any kind of encryption or strong authentication; we'll get to that in part 3. In my experience, learning LDAP in small chunks works best. (Then again, perhaps I'm just a bit dim.) So sit back, strap in, and keep your fingers away from the training wheels.

"The wise sysadmin will consult the documentation for their distro; it's quite possible that OpenLDAP will be packaged and ready to go in a pleasing manner (or ready to go in an odd manner--you never know). I'm all for easy--if your particular distribution provides an easy way, use it. RPMs can also be obtained from rpmfind.net, which thoughtfully lists all the required additional packages.

"Debian of course goes its own merry way. apt-get does the job just fine; the tricky bit is finding out the package names. Debian users want ldap-utils; slapd, which is OpenLDAP; and libdb4.1, to get the Sleepycat DB. These three components are enough to get you up and running. apt-get will walk you through a minimal configuration and will automatically start up slapd, the LDAP server daemon.
Solaris

Configuring the Behavior of the Solaris IP Filter Firewall

Post date: April 20, 2007, 18:04 Category: Network Views: 9580 Comments
Tutorial quote: When defining packet filtering rules in the /etc/ipf/ipf.conf file, it is necessary to understand how the Solaris IP Filter firewall reads this file and compares any packet against the rules in the file.
Debian

How to configure a porn blocking proxy with Linux in under 20 mins? (squid to the max)

Post date: January 5, 2007, 05:01 Category: Software Views: 4657 Comments
Tutorial quote: A quick tutorial on installing and configuring basic squid, but then implementing block lists to block, in this case porn sites, but really anything is possible. Source to blocklist included. This is aimed at a debian server but Fedora pointers are included.
Linux

Linux Web Filtering in 7 steps

Post date: April 12, 2005, 18:04 Category: Network Views: 4351 Comments
Tutorial quote: How to install a transparent Squid proxy server with real-time HTTP virus scanning on Mandrake 10.0 using DansGuardian and ClamAV?

People quickly and easily access volumes of research on the Internet and correspond with a mouse click. For more and more companies, content filtering is part of the large battle to combat all kinds of online threats, including hackers, worms and viruses. Linux content filtering allows administrators to configure and manage Internet access across the entire network and to block unwanted Web content like pornography, shopping Web sites, games and gambling.

This guide contains all the necessary information for installing and understanding the architectural layout of the implementation. It was written with the assumption that you understand how to install programs and have a basic understanding of Linux Mandrake. This includes installing Linux Mandrake and RPM packages, editing files, making directories, compiling software and understanding general UNIX commands. This guide doesn’t explain how to use or configure Squid, DansGuardian and ClamAV but information on where to obtain this information can be found in the “Additional information” section.
CentOS

How To Monitor A System With Sysstat On Centos 4.3

Post date: August 29, 2006, 15:08 Category: System Views: 6521 Comments
Tutorial quote: A common task for System Administrators is to monitor and care for a server. That's fairly easy to do at a moment's notice, but how to keep a record of this information over time? One way to monitor your server is to use the Sysstat package.

Sysstat is actually a collection of utilities designed to collect information about the performance of a linux installation, and record them over time.

It's fairly easy to install too, since it is included as a package on many distributions.
Fedora

Unattended Fedora 8 Installation With NFS And Kickstart

Post date: April 8, 2008, 10:04 Category: Installing Views: 3913 Comments
Tutorial quote: This document describes how to set up an installation environment with kickstart and NFS on Fedora 8. With the resulting system you will be able run unattended Fedora 8 installations on the client systems in your LAN - additionally, you will save lots of Internet bandwidth. The whole client configuration can be included into the kickstart file (especially the post-installation script) so you, the admin, will also save a vast amount of time.
Linux

Building a Linux video jukebox for an anime convention

Post date: November 25, 2005, 21:11 Category: Miscellaneous Views: 3326 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.
Ubuntu

Installing Oracle VM VirtualBox on Ubuntu

Post date: October 10, 2010, 05:10 Category: Software Views: 4445 Comments
Tutorial quote: What does that mean? For one thing, VirtualBox installs on your existing Intel or AMD-based computers, whether they are running Windows, Mac, Linux or Solaris operating systems. Secondly, VirtualBox extends the capabilities of your existing computer so that VirtualBox can run multiple operating systems (inside multiple virtual machines) at the same time. So, for example, you can run Windows and Linux on your Mac, run Windows Server 2008 on your Linux server, run Linux on your Windows PC, and so on, all alongside your existing applications. You can install and run as many virtual machines as you like -- the only practical limits are disk space and memory.
Ubuntu

Pybackpack - A user friendly file backup tool for Ubuntu Linux Desktop

Post date: September 7, 2008, 16:09 Category: System Views: 3673 Comments
Tutorial quote: A graphical tool to make file backup simpler. Provides a user-friendly interface which allows you to back up your files easily to an archive, to a CD/DVD or to a remote location using SSH.pybackpack is a user-friendly file backup tool written for the Gnome desktop and released under the GPL.

Unix+clones

Xen Disk I/O benchmarking: NetBSD dom0 vs Linux dom0

Post date: April 21, 2005, 10:04 Category: Benchmarks Views: 3297 Comments
Tutorial quote: Xen is a relatively new technology to enable several virtual machines (domU) to run on one computer. The purpose of this article is to determine what operating system (NetBSD or Linux) should be selected as domain 0 (dom0) operating system to get the best performance when running several CPU and disk intensive virtual machines at the same time.
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