DNS

Dns stands for domain name system.

Basically dns works as resolver.

It resolves IP address to readable domain name such as abc.com and domain name to IP address.

It’s port number is 53.

There are two types of DNS given below.

1. Reverse DNS Lookup.

Reverse DNS lookup is using an Internet IP address to find a domain name..

2. Forwarded DNS Lookup.

Forward DNS lookup is using an Internet domain name to find an IP address.

Forward or Reverse DNS lookup are called nslookup.