ComTech: IT Support Stirling

How to set up a DNS server on Ubuntu Server 12.04 LTS

Today I will show you how to set up a DNS server on Ubuntu Server 12.04 LTS.

The first thing to do is to install the software we need, in this case we need the bind9 package. Open up a terminal and type:

sudo apt-get install bind9

Once installed it is time for some configuring. The first file we need to configure is named.conf.local. So in the terminal type:

sudo nano /etc/bind/named.conf.local

I have used nano to open up the file but use whichever text editor you are happy with. Insert the following code into the file:

# This is the zone definition. replace with your domain name
zone “” {
type master;
file “/etc/bind/zones/”;

# This is the zone definition for reverse DNS. replace 0.168.192 with your network address in reverse notation – e.g my network address is 192.168.0
zone “” {
type master;
file “/etc/bind/zones/”;

Replace with the name of your DNS domain (this is not the same as an active directory domain but rather a name for your DNS zone).

Next up is the options file. In the terminal type:

sudo nano /etc/bind/named.conf.options

Within this file we need to modify the forwarder with the address of your ISP’s DNS servers. So modify the file adding the following:

forwarders {;;

Replace the addresses above with the addresses of your ISP’s DNS servers.

Now we need to add the zones file:

sudo mkdir /etc/bind/zones

And then configure it:

sudo nano /etc/bind/zones/ (replace with your DNS domain).

Add the following code to the file:

// replace with your domain name. do not forget the . after the domain name!
// Also, replace ns1 with the name of your DNS server IN SOA
// Do not modify the following lines!

// Replace the following line as necessary:
// ns1 = DNS Server name
// mta = mail server name
// = domain name IN NS IN MX 10

// Replace the IP address with the right IP addresses.
www IN A
mta IN A
chris-server IN A

In the above code replace the following: with your DNS domain name, with your static DNS server address, with your computers hostname.dns-domain,

mta is your mail server (if you have one). If you do modify the IP address to show this.

Next we have to create the reverse DNS zone file:

sudo nano /etc/bind/zones/

Add the following code:

//replace with your domain name, ns1 with your DNS server name.
// The number before IN PTR is the machine address of the DNS server
@ IN SOA (


All that is left to do is restart bind:

sudo service bind9 restart

Don’t forget to test the new configuration:



If you are unable to restart the bind9 service run the command named -g 53 which will give you a list of any configuration errors.

About the Author


Hi I’m Chris Wakefield the owner of ComTech IT Support. I provide Windows, Mac and Linux based IT Support to small businesses in Stirling, Alloa and Falkirk.

Follow @Comtech247 on Twitter



Nano vs Vi

The question of which text editor is best always comes up and as always it depends which one suits your specific requirements. On the left we have Nano which is basically a free version of Pico and on the right we have the mighty Vi.

Personally although Vi is more fully featured I prefer Nano and I shall explain why. When I started out learning Linux everybody suggested I learn Vi. I tried but I found the interface very confusing, especially the modal concept (normal, insert and command modes), and Vi gives you no indication of any commands that you might need. Contrast this with Nano which is easy to use (even using the cursor is allowed!!), has the command shortcuts displayed at the bottom and in my opinion just works. I can however appreciate why Vi would be used by programmers as it is a very powerful program and it does come as standard on any distribution you want to use.

So to sum up;

EVERYDAY use – Nano

As always this is open source so you can ignore my opinions and use whatever takes your fancy!!

About the Author

Hi I am Chris the owner of ComTech. I provide IT Support, Laptop repairs and Computer repairs to both personal and business clients in and around Stirling. For a list of what I can offer you why not visit my website where you will find my blog, testimonials, services and much more.  Start supporting a local business today so I can start supporting you.

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