Consequently, how could our Information Technology Entrepreneurs protect themselves and defend their respective SMEs from more and more sophisticated DNS Security cyber-attack? To answer proactively such a down-to-earth question, this September 2024 Newsletter is meticulously and professionally written to help our hardworking Information Technology Entrepreneurs by providing them with an assortment of pragmatic cybersecurity tools that can help protect their DNS users, esteemed clients, valuable organizations and precious financial assets.
How Does the Domain Name System (DNS) Function?
When you type a web address into your browser, DNS performs the following steps1 to locate the corresponding IP address:
- DNS Query: Your computer sends a query to a DNS resolver, which is usually provided by your Internet Service Provider (ISP).
- Recursive Lookup: The resolver checks its cache for the IP address. If it is not found, the resolver queries other DNS servers in a hierarchical manner summarized as follows:
- Root Nameserver: The Root Nameserver directs the query to the appropriate Top-Level Domain (TLD) server (for example: .com, .ca, .us, .org, etc.).
- TLD Nameserver: The TLD Nameserver points to the authoritative nameserver for the specific domain.
- Authoritative Nameserver: The Authoritative Nameserver provides the final IP address for the domain.
- Response: The resolver returns the IP address to your computer, which then connects to the web server in order to load the appropriate webpage.
Read on our article published on IN-SEC-M. |
