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Search results for Step-By-Step Configuration of NAT with iptables

CentOS

Paravirtualization With Xen On CentOS 5.3 (x86_64)

Post date: May 17, 2009, 13:05 Category: Miscellaneous Views: 5663 Comments
Tutorial quote: This tutorial provides step-by-step instructions on how to install Xen (version 3.0.3) on a CentOS 5.3 (x86_64) system. Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.
Debian

Virtualization With Xen On Debian Lenny (AMD64)

Post date: February 8, 2009, 13:02 Category: Installing Views: 4071 Comments
Tutorial quote: This tutorial provides step-by-step instructions on how to install Xen on a Debian Lenny (5.0) system (AMD64). Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.
Linux

Bandwidth monitoring with iptables

Post date: December 27, 2005, 15:12 Category: Network Views: 4440 Comments
Tutorial quote: Linux has a number of useful bandwidth monitoring and management programs. A quick search on Freshmeat.net for bandwidth returns a number of applications. However, if all you need is a basic overview of your total bandwidth usage, iptables is all you really need -- and it's already installed if you're using a Linux distribution based on the 2.4.x or 2.6.x kernels.
Debian

Paravirtualization With Xen 4.0 On Debian Squeeze (AMD64)

Post date: March 31, 2011, 09:03 Category: Installing Views: 3828 Comments
Tutorial quote: This tutorial provides step-by-step instructions on how to install Xen 4.0 on a Debian Squeeze (6.0) system (AMD64) and create paravirtualized guests. Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.
Debian

How To Speed Up Drupal 7.7 With Boost And nginx (Debian Squeeze)

Post date: August 21, 2011, 18:08 Category: Miscellaneous Views: 3044 Comments
Tutorial quote: This tutorial shows how you can speed up your Drupal 7.7 installation on a LAMP stack (Debian Squeeze) with the help of Boost and nginx. Boost provides static page caching for Drupal enabling a very significant performance and scalability boost for sites that receive mostly anonymous traffic. Boost makes sure that your logged-in users always get fresh content by not caching pages for logged-in users. In a first step I will show how to make your site faster by enabling Boost on a normal LAMP stack (Apache2, PHP, MySQL), and in a second step I explain how to make your site even faster by using nginx as a reverse proxy sitting in front of Apache and delivering the static HTML pages cached by Boost. nginx delivers static files a lot of faster than Apache and uses less memory/CPU.
Ubuntu

How To Install VMware Server On A Ubuntu 6.06 LTS (Dapper Drake) System

Post date: July 16, 2006, 16:07 Category: Software Views: 4088 Comments
Tutorial quote: This tutorial provides step-by-step instructions on how to install the free VMware Server (version 1.0.0) on a Ubuntu 6.06 LTS (Dapper Drake) system.

VMware has just released version 1.0.0 of its free VMware Server. With VMware Server you can create and run guest operating systems ("virtual machines") such as Linux, Windows, FreeBSD, etc. under a host operating system. This has the benefit that you can run multiple operating systems on the same hardware which saves a lot of money, and you can move virtual machines from one VMware Server to the next one (or to a system that has the VMware Player which is also free). In this article we use Ubuntu 6.06 LTS (Dapper Drake) as the host operating system.

I want to say first that this is not the only way of setting up such a system. There are many ways of achieving this goal but this is the way I take. I do not issue any guarantee that this will work for you!
Ubuntu

Set Up Ubuntu-Server 6.10 As A Firewall/Gateway For Your Small Business Environment

Post date: November 26, 2006, 21:11 Category: Installing Views: 5613 Comments
Tutorial quote: This tutorial shows how to set up a Ubuntu 6.10 server (Edgy Eft) as a firewall and gateway for small/medium networks. The article covers the installation/configuration of services such as Shorewall, NAT, caching nameserver, DHCP server, VPN server, Webmin, Munin, Apache, Squirrelmail, Postfix, Courier IMAP and POP3, SpamAssassin, ClamAV, and many more.
Ubuntu

Getting Started with Firewall Builder

Post date: August 14, 2009, 17:08 Category: Software Views: 3053 Comments
Tutorial quote: This guide presents an introduction to Firewall Builder. Firewall Builder (also known as fwbuilder) is a GUI firewall configuration and management tool that supports iptables, ipfilter, pf, ipfw, Cisco PIX (FWSM, ASA) and Cisco IOS extended access lists.
Linux

Hardening Linux: a 10 step approach to a secure server

Post date: June 22, 2005, 10:06 Category: Security Views: 4425 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.
Ubuntu

Ubuntu Customization Guide v2

Post date: November 26, 2007, 05:11 Category: Desktop Views: 6600 Comments
Tutorial quote: Today with a hike in Linux acceptance its pretty hard for competitors to provide similar solutions at free of cost. Open Source is known for User Interaction with Operating System which cannot be done with other OS. Linux user can customize, create, edit, add files according to his/her taste..and customization is the part where Linux is one step ahead of every OS.
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