DNS Records

A       ## address record,Returns a 32-bit IPv4 address, most commonly used to             map hostnames to an IP address of the host.      ...

DNS Resolution Process

Let's check how a Domain Name Service works when we entering a name into a client like a browser or a mail client. 1. When a user type a...

How to enable sudo for normmal users

Sudo is a standard way to give users some administrative rights without giving out the root password. Sudo is very useful in a multi user en...

How to clear DNS system cache in Linux / Windows / Mac

DNS (Domain Name System) is a resolution mechanism to translate, resolve and return real IP address of the serving machine against the fully...