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Linux

How To Set Up Linux As A Dial-In Server

Post date: January 21, 2007, 20:01 Category: Network Views: 4754 Comments
Tutorial quote: This document describes how to attach modems to a Linux box and allow it to receive calls to connect users to the network. It is like being your own ISP (Internet Service Provider). If your Linux box is connected to the Internet, then the users will also be connected to the Internet. Your Linux box becomes a router. This is also known as RAS (Remote Access Services) in the Microsoft world. In the Linux world it is called PPP (Point to Point Protocol).
Linux

Setting up a serial console

Post date: February 19, 2007, 19:02 Category: Miscellaneous Views: 4376 Comments
Tutorial quote: This tutorial will show you how to set up a serial console on a Linux system, and connect to it via a null modem cable. This is quite useful if your Linux server is in a headless configuration (no keyboard or monitor), as it allows you to easily get a console on the system if there are any problems with it (especially network problems, when SSH is not available). In the end, the GRUB menu will appear over the serial link, as will the bootup messages (output when booting the system). I am using Debian Etch on the server and Ubuntu Edgy on my client, although this should work on any Linux distribution.
OpenSUSE

OpenVAS - Opensource Vulnerability Assessment Scanner

Post date: August 24, 2008, 22:08 Category: Security Views: 11419 Comments
Tutorial quote: OpenVAS, Open Bulnerability Assessment Server is a free opensource vulnerability assessment software released under GNU GPL lincese. OpenVAS is a fork of Nessus Vulnerability assessment software. Similar to the Plugin sets in Nessus, OpenVAS provides free Network Vulnerability Tests plugins that can be updated regularly.
Ubuntu

Creating Snapshot-Backups with BackerUpper On Ubuntu 9.04

Post date: July 27, 2009, 10:07 Category: Desktop Views: 2967 Comments
Tutorial quote: BackerUpper is a tool similar to Apple's TimeMachine. It is intended to create snapshot-backups of selected directories or even your full hard drive. From the BackerUpper project page: "Backerupper is a simple program for backing up selected directories over a local network. Its main intended purpose is backing up a user's personal data." This article shows how to install and use BackerUpper on Ubuntu 9.04 (Jaunty Jackalope).
Ubuntu

Creating Snapshot-Backups with BackerUpper On Ubuntu 7.10

Post date: March 11, 2008, 10:03 Category: Desktop Views: 3502 Comments
Tutorial quote: BackerUpper is a tool similar to Apple's TimeMachine. It is intended to create snapshot-backups of selected directories or even your full hard drive. From the BackerUpper project page: "Backerupper is a simple program for backing up selected directories over a local network. Its main intended purpose is backing up a user's personal data." This article shows how to install and use BackerUpper on Ubuntu 7.10 (Gutsy Gibbon).
Unix+clones

Encrypted NFS with OpenSSH

Post date: May 21, 2005, 19:05 Category: Network Views: 3664 Comments
Tutorial quote: NFS is a widely deployed, mature, and understood protocol that allows computers to share files over a network. The main problems with NFS are that it relies on the inherently insecure UDP protocol, transactions are not encrypted, hosts and users cannot be easily authenticated, and its difficulty in firewalling. This article provides a solution to most of these problems for Linux clients and servers. These principles may also be applied to any UNIX server with ssh installed. This article assumes basic knowledge of NFS and firewalling for Linux.
Ubuntu

Tweaking Hidden Ubuntu Settings With Ubuntu Tweak

Post date: January 29, 2008, 12:01 Category: Desktop Views: 4753 Comments
Tutorial quote: Ubuntu Tweak is a tool that lets you change hidden Ubuntu settings, for example: hide or change the splash screen, show or hide the Computer, Home, Trash, and Network icons, change Metacity, Nautilus, power management, and security settings, etc. Currently Ubuntu Tweak is available only for the Ubuntu GNOME desktop, i.e., it will not work on Kubuntu or Xubuntu. This short guide shows how to install and use Ubuntu Tweak.
Linux

Boot Linux Over HTTP With netboot.me

Post date: October 1, 2009, 12:10 Category: Miscellaneous Views: 4064 Comments
Tutorial quote: This tutorial shows how you can boot Linux over HTTP with netboot.me. All that users need is Internet connectivity and a small program (gpxe) to boot the machine. This gpxe program provides network booting facility. netboot.me allows you to boot into the following distributions: Debian, Fedora, OpenSUSE, and Ubuntu. netboot.me provides gpxe images for USB sticks, CDs, and also for floppies, i.e., you can boot from a USB sticks, a CD, or a floppy.
Debian

Nagios and Oreon (Nagios web front end) installation and Configuration

Post date: July 18, 2006, 17:07 Category: Software Views: 4044 Comments
Tutorial quote: Nagios is a host and service monitor designed to inform you of network problems before your clients, end-users or managers do. It has been designed to run under the Linux operating system, but works fine under most *NIX variants as well. The monitoring daemon runs intermittent checks on hosts and services you specify using external "plugins" which return status information to Nagios. When problems are encountered, the daemon can send notifications out to administrative contacts in a variety of different ways (email, instant message, SMS, etc.).

Linux

Configure Multiple Network Profiles on Linux

Post date: April 13, 2005, 02:04 Category: Network Views: 3302 Comments
Tutorial quote: Mobile Linux users face some interesting (OK, vexing) challenges when they want to plug into different networks. Any Linux system will easily support all manner of networking profiles--dialup, ISDN, Ethernet, wireless--the tricky bit is configuration. Manually re-configuring a PC for every connection is low on most users' lists of "fun things to do." You can be an ace scripting guru and fiddle up something yourself, or you can find a nice ready-made utility to do the work for you. Unfortunately, I have not found a universal utility to do this. However, there are a lot of utilities specific to various distributions, and an assortment of other utilities.
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