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How DNS security works ?

Basic Function of DNS:

  • DNS translates human-friendly domain names into computer-friendly IP addresses. Think of it like a phonebook for the internet.

Unique Identifiers (IP Addresses):

IP addresses are like unique phone numbers for each website or computer. They help computers locate and communicate with each other.

DNS Security Extensions:

  • To make DNS more secure, some extra features have been added:
a. Origin Authentication:
  • It’s like checking the ID of the person who gives you information. This ensures that the data you receive from DNS is really from where it claims to be.
b. Authenticated Denial of Existence:
  • This is a way of saying, “If DNS says something doesn’t exist, it’s sure about it.” It helps prevent fake information.
c. Data Integrity:

  • Imagine you’re sending a letter, and you want to make sure it doesn’t get changed in the mail. Data integrity in DNS ensures that the information you receive is exactly as it was sent, without any unauthorized alterations.

Overall Purpose:

  • These security extensions help protect against fake or malicious activities. They make sure that the information you get from DNS is genuine, hasn’t been tampered with, and is coming from the right source.

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