The concept of DNSSEC
The collection of security extensions known as DNSSEC gives DNS authentication and data integrity.
The Internet Engineering Task Force (IETF) developed it in the 1990s. Its principal objective is to offer an authentication mechanism that uses digital signatures based on open cryptography to demonstrate the data’s origin. With a private key, the data owner can certify the security of DNS data (DNS records). Each recursive server can authenticate the source of the data by comparing it to the public key.
The root server is at the top of the trust chain, which extends down to the specific hostname. Except for the root zone, which has nothing above it, each zone is signed by the one above it.
The recursive server will drop data and try again if, for any reason, it cannot authenticate it. Be safe rather than sorry.
How does DNSSEC increase security?
Your security is increased by DNSSEC, which gives you the instruments (suite) to ensure that DNS records are not changed. As a result, your safety is boosted, and the likelihood of illicit activities like DNS cache poisoning is reduced (DNS spoofing). When a criminal is able to change DNS records instantly, the client receives them and is then directed to a different server that the criminal is in control of.
Additionally, DNSSEC enables you to verify the origin of DNS data. You should be aware by now of the frequency and various methods thieves employ to attack the DNS. This feature for authentication is very important. Knowing for sure that data truly belongs to the source they are said to come from, i.e., to the correct authoritative name server, is priceless. This lessens the likelihood of bogus servers succeeding.
If DNSSEC is enabled, DNS recursive servers can verify the authenticity of the data they use, making it trustworthy. We will discard fake data. And they won’t use them to maintain security if the recursion somehow fails to authenticate data. In order to prevent the use of phony or fabricated data, they will attempt the authentication procedure again.
How to apply it?
Most DNS hosting firms support DNSSEC, but it is not turned on by default. As a result, almost all well-known generic top-level domains and country-code top-level domains can use DNSSEC, although some domains cannot.
You must activate it in the management panel (Dashboard) of your DNS provider before you can begin using it. Then, simply select “enable” next to each zone you desire. After that, you’ll get a DS record (delegation singer) and put it in the location where your domain is registered. The chain will then be finished.
Priority one is security. Your domain cannot exist online without DNS, however, DNS by itself is not secure. To safeguard your domain, network, and users, enable DNSSEC.