What is DNS?

DNS stands for Domain Name System. It helps correlating a user-friendly name to IP address. If DNS was not present, we should be memorizing the IP address of each host – which is impossible. DNS converts IP addresses to easy to remember texts – which we call hostnames. When you type this text into a web browser or if you try to send an e-mail, this request is relayed to a name server which looks up for the IP address of the web server.

How Does DNS Work?

DNS Based Attacks

Each and every day we are seeing new types of attacks. Throughout the experiences in customer networks, there are multiple kinds of attacks and we need to treat them differently.

The Volumetric or DDoS attacks:

• DNS reflection
• DNS amplification
• TCP/UDP/ICMP floods
• NXDOMAIN attack
• Phantom domain attack
• Random subdomain attack
• Domain lockup attack

DNS Based Attacks: