Class of bind and dig

Course Name: Computer Networking
Course Code: 403

Hello!
I am giving some notes on Jewel sir's class about bind and dig
Don't be happy! I am not sure about them because I didn't give much attention in Networking classes

However, I am giving those from Amit's file which was given by Rayhan in this [You must be registered and logged in to see this link.]

I don't know much what I am going to give in the following section. Please let me know if it need to modify,delete,addition or anything else.

Class of 13 October:

bind:

We can set up DNS server by using bind

First install bind9 in your ubuntu.

Code:

sudo apt-get install bind9

Lets see which files are in bind.

Code:

ls /etc/bind

named.conf is the primary configuration file for the BIND DNS server named.

Code:

cat /etc/bind/named.conf

You can see the default zones and their type by giving the following command in terminal

Code:

cat /etc/bind/named.conf.default-zones

The db.root file holds the information on root name servers needed to initialize cache of Internet domain name servers

Code:

cat /etc/bind/db.root

dig:

The dig(domain information groper) command is used for interrogating DNS name servers. It displays the answers that are returned from the name server(s) that were queried.
when the DNS server starts some named servers are shown after giving the command -

Code:

dig -tns

In the answer section(after giving the section you will see this) NS means named server.

I won't say it is an excellent work, but good attempt nevertheless.