FreeOS.com: DNS Tutorial

[ Thanks to Mayank for this link. ]

If the DNS HOWTO isn't cutting it for you, you may want to take a look at this explanation and walkthrough of setting up DNS clients and servers for your network from FreeOS.com.

Let's say kshounish1, kshounish2, kshounish3, kshounish4, and kshounish5 are the 5 machines in a network, then for communication between each machine, each machine's /etc/hosts file should have all the five entries of the machine name. Within this small network there would be no problem if you add another machine say kshounish6 in the network. But for this too, the network administrator has to go to each machine, add the kshounish6 in /etc/hosts file and then comeback to the new comer kshounish6 machine and add all the other entries (kshounish1...kshounish5) including its own name also in /etc/hosts file.

But what if the network is setup with say 60 machines and a 61st machine has to be added? Then administrator will have to go to each machine again and write the new machine?s name at /etc/hosts/ file and again comeback and write all the 60 machines name on the 61st machine's etc/hosts file which is a tedious and time taking job. Thus, it is better to keep a centralized server, where all the ipaddresses will stay and if a new one does enter into the network then the change will have to be done at the server and not on the client?s machine. And a better way of setting that client-server networking concept is having one master server and 3-4 slave servers for it.

Complete Story

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• domain notes: Setting up DNS servers(Feb 19, 2001)
• Security Portal: DNS Server Infrastructure(Feb 04, 2001)
• Linux Magazine: Using DNS(Nov 25, 2000)
• linux.ie: How DNS works(Jan 23, 2000)
• UNIX & LINUX Computing Journal: Overview of DNS(Dec 12, 1999)
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