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Install PowerDNS and Poweradmin on Fedora Linux

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This article shows how you can install the PowerDNS nameserver (with MySQL backend) and the Poweradmin control panel for PowerDNS on a Fedora 10 system. PowerDNS is a high-performance, authoritative-only nameserver - in the setup described here it will read the DNS records from a MySQL database (similar to MyDNS), although other backends such as PostgreSQL are supported as well. Poweradmin is a web-based control panel for PowerDNS. read more...
permapage | score:7966 | -falko, February 13, 2009

Set up Caching DNS with djbdns on FreeBSD

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Building a local DNS cache will speed up your internet connection since the time for the translation job (converting domain names into IP addresses) will become negligible with the assumption that the DNS cache gets the information from the parent DNS. read more...
permapage | score:7881 | -falko, May 8, 2007

Tutorial: Setting Up A DNS Server

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An introduction to the Domain Name Service and how to use it..
There are a couple of ``gotchas'' that normally are avoided with name lookups that are often seen when setting up reverse zones. Before you go on you need reverse lookups of your machines working on your own nameserver. If it isn't go back and fix it before continuing.

I will discuss two failures of reverse lookups as seen from outside your network...
read more...
permapage | score:7876 | -Ray, May 11, 2001 (Updated: September 8, 2004)

Tutorial: Install MyDNS-NG, MyDNSConfig 3 on Debian

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In this tutorial I will describe how to install and configure MyDNS-NG and MyDNSConfig 3 on Debian Lenny. MyDNS-NG is a DNS server that uses a MySQL database as backend instead of configuration files like, for example, Bind or djbdns. MyDNSConfig is an easy to use web-based interface to MyDNS-NG. MyDNSConfig can create all types of DNS records that are available in MyDNS and adds features like user management and access privileges. read more...
permapage | score:7832 | -falko, April 10, 2009

Linux DNS Tutorial

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This tutorial describes the basics of the Domain Name System (DNS) that Linux system administrators should know of. Front-ends and quick templates to set up domain records have a place in managing sites, but when confronted with DNS configurations already in existence, nothing can substitute for knowing and using the fundamentals. read more...
permapage | score:7828 | -falko, April 10, 2006

OpenVZ Tutorial: Build virtual host with Web, MySQL, Email, DNS servers on Debian 6

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This tutorial describes how you can set up a single dedicated server as a virtual multiserver environment using OpenVZ with dedicated Web & MySQL, Email and DNS servers on Debian Squeeze. Also, you will learn how to maintain all these servers. As an addition, you will learn how to install some very useful packages on all of them, how to protect them and how to monitor them. At the end you will have a fully functional virtual multiserver environment, ready for shared hosting. read more...
permapage | score:7803 | -falko, May 26, 2012

Install PowerDNS, MySQL, Poweradmin on Debian 6

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This article shows how you can install the PowerDNS nameserver (with MySQL backend) and the Poweradmin control panel for PowerDNS on a Debian Squeeze system. PowerDNS is a high-performance, authoritative-only nameserver - in the setup described here it will read the DNS records from a MySQL database (similar to MyDNS), although other backends such as PostgreSQL are supported as well. Poweradmin is a web-based control panel for PowerDNS. read more...
permapage | score:7717 | -falko, August 31, 2011

Set up BIND9 for separate internal, external DNS service

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This tutorial shows you how to configure a BIND9 DNS server to serve an internal network and an external network at the same time with different set of information. To accomplish that goal, a new feature of BIND9 called view is used. As a tutorial it will walk you through the whole set up, but initial knowledge of BIND and DNS is required. read more...
permapage | score:7701 | -falko, March 23, 2006

Patch BIND9 against DNS cache poisoning on Linux

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Dan Kaminsky earlier this month announced a massive, multi-vendor issue with DNS that could allow attackers to compromise any name server - clients, too. These two articles explain how you can fix a BIND9 nameserver on Debian Etch and Fedora/CentOS so that it is not vulnerable anymore to DNS cache poisoning. read more...
mail this link | permapage | score:7606 | -falko, July 29, 2008

Tutorial: Configuring Secondary DNS

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This is the easy part.
A master DNS server contains the zone files which dictate the IP addresses and hostnames for a zone. A slave DNS server contains the same information, but must obtain its information from a master DNS server. For example, when a primary name server starts, it reads the zone information from files on the disk. However, when a slave name server starts, it asks the primary for the information.
read more...
permapage | score:7553 | -Alex, July 27, 2000 (Updated: June 23, 2003)

Book review: DNS in Action

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The book DNS in Action is a guide to DNS implementation, os specific configuration, and administration. This is a practical book for new sys admin and network architects about how to run and configure DNS. Libor Dostalek and Alana Kabelova has done a good work to put together complicated topic such as DNS and its implementation. The entire book is divided into ten chapters.

We humans take advantage of DNS whenever possible by using terms URLs and e-mail addresses. The first chapter explains the basis of DNS and its principles. read more...
mail this link | permapage | score:7552 | -nixcraft, July 12, 2006

Using the Domain Name Service (DNS)

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You know my name, look up my number...
...it's estimated that more than 50,000 new domain names are registered each day. The Domain Name Service (DNS, also often referred to as the Domain Name System) was created to help solve this problem. DNS is essentially a huge conga line of servers (called name servers) snaking through the Internet. For any computer connected to the Net, a given DNS server can provide you with that computer's host name and IP address information itself, or the server knows how to find other name servers that will have that information.

In this story we give a general overview of the DNS system, how it's implemented on Linux, and how to configure it. We describe the files that hold the configuration information and host database and where they're located. Sample configuration files are also included to get you started with your own DNS setup.
read more...
mail this link | permapage | score:7546 | -Ray, December 5, 2000 (Updated: August 27, 2003)

Tutorial: Set up MyDNS on Ubuntu with MyDNSConfig

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In this tutorial I will describe how to install and configure MyDNS and MyDNSConfig. MyDNS is a DNS server that uses a MySQL database as backend instead of configuration files like, for example, Bind or djbdns. The advantage is that MyDNS simply reads the records from the database, and it does not have to be restarted/reloaded when DNS records change or zones are created/edited/deleted. A secondary nameserver can be easily set up by installing a second instance of MyDNS that accesses the same database or, to be more redundant, uses the MySQL master / slave replication features to replicate the data to the secondary nameserver. read more...
mail this link | permapage | score:7516 | -falko, March 12, 2007

Tutorial: Install MyDNS, MyDNSConfig 3 on Fedora 10

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In this tutorial I will describe how to install and configure MyDNS and MyDNSConfig 3 on Fedora 10. MyDNS is a DNS server that uses a MySQL database as backend instead of configuration files like, for example, Bind or djbdns. MyDNSConfig is an easy to use web-based interface to MyDNS. MyDNSConfig can create all types of DNS records that are available in MyDNS and adds features like user management and access privileges. read more...
permapage | score:7461 | -falko, May 24, 2009

Tutorial: DjbDNS on Ubuntu Server 8.04

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DjbDNS is a collection of Domain Name System tools. It includes software for all the fundamental DNS operations. This tutorial shows how to set it up on an Ubuntu 8.04 AMD64 server.
When a browser wants to contact www.hotwired.com, it first asks a DNS cache, such as djbdns's dnscache, to find the IP address of www.hotwired.com. Internet service providers run dnscache to find IP addresses requested by their customers. If you're running a home computer or a workstation, you can run your own dnscache to speed up your web browsing.
read more...
mail this link | permapage | score:7332 | -falko, July 14, 2008

Tutorial: Run DNS Servers on Debian 6

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This tutorial shows how you can run your own DNS servers (primary and secondary) with ISPConfig 3. To do this, you need two servers with two different public IP addresses and with ISPConfig 3 installed. I will use Debian Squeeze for both DNS servers here to demonstrate the base system setup process and ISPConfig 3 installation, but once you have ISPConfig 3 installed on your servers, the configuration inside ISPConfig 3 is identical, no matter what distribution you use. read more...
permapage | score:7230 | -falko, July 21, 2011

DNS Overview

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The present and future DNS in three pages...
Created in the 1980s when the Internet was still young but overrunning its original system for translating host names into IP addresses, DNS is one of the foundation technologies that made the worldwide Internet (and the World Wide Web) possible. Yet this did not all happen smoothly, and DNS technology has been periodically refreshed and refined. Though it's still possible to describe DNS in simple terms, the underlying details are by now quite sublime. This article explores the supposed and true definitions of DNS (both the system and the protocol) and shows some of the tension between these two definitions through the lens of the Internet protocol development philosophy.
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mail this link | permapage | score:7169 | -Ray, May 30, 2007

Load Balancing with DNS

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An introduction to load balancing using round robin DNS.
Other availability techniques involve using specific load balancing hardware (like the "Big IP" and Cisco Local Directors) or involve using DNS and routing to affect the load balancing. In round robin DNS, a single host name (e.g., http://www.saladbar.com) resolves to multiple addresses. These IP addresses are then used on a more or less equal basis (some say that the first and last addresses in the list get a slightly larger share of the traffic).
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mail this link | permapage | score:7037 | -Ray, June 24, 2000 (Updated: August 16, 2003)

Tutorial: Build a Multiserver Web, Email, DNS and MySQL Database System on Debian 5.0

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This tutorial describes the installation of an ISPConfig 3 multiserver setup with dedicated web, email, database and two DNS servers all managed trough a single ISPConfig 3 control panel. The setup described below uses five servers and can be extended easily to to a higher number of servers by just adding more servers. E.g. if you want to have two mailservers, do the setup steps from chapter 2 on both of these servers. If you want to set up more web servers, then install ISPConfig on all other web servers in expert mode except of the first one. read more...
mail this link | permapage | score:6956 | -falko, August 20, 2010

Security: Understanding DNS Attacks

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Minimizing the vulnerabilities of the Domain Name System...
Understanding the mechanics behind DNS is important when securing your DNS server. DNS is robust and full featured; understanding what resources each DNS action requires will allow administrators to disable unnecessary features, therefore achieving a minimalist and secure DNS server. This section reviews the basics of DNS mechanics. Domain name information is stored in flat text files called zone files. User requests and server replies are simple text-file searches and take very few system resources. Some newer DNS technologies allow for write access to update record data and other configurations remotely. However, unless write access is explicitly enabled, from an end user perspective DNS should be referred to as a read-only service. DNS is mechanically broken up into records, servers, and their respective chains of authority from the root servers...
read more...
mail this link | permapage | score:6940 | -Ray, May 17, 2004
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Articles are owned by their authors.   © 2000-2012 Ray Yeargin