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DNS Security
In the previous chapter, we learned about various routing protocols, network traffic flow, and common attacks. This chapter talks about a different but very interesting and important network protocol – the Domain Name System (DNS), a very familar term for Information Technology (IT) teams, as they deal with common DNS problems in their day-to-day lives.
DNS technology arose in the early 80s when it was very difficult for users to remember Internet Protocol (IP) addresses. Back then, domain names mapping against each IP address were added to a hosts file, but it was very difficult to maintain every entry in this as it got larger day by day. Hence, a centralized dynamic approach was discovered called DNS, which we are going to ...
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