DNS availability to ensure business continuity
If your DNS servers crash and stop answering queries, your users will not be able to connect with their applications, nor will your customers be able to interact with you. In simple words, you lose money, and your brand image will be dramatically impacted.
Follow DNS best practices against cache poisoning
The DNS protocol was designed to always answer a query. If for any reason there is latency or time out and some queries do not get resolved, this creates a major security hazard. Your DNS is now wide open for attackers to poison your DNS cache, which means that valid traffic will be redirected to malicious sites where private data can be intercepted and stolen.
Protect legitimate traffic, block queries only when you’re 100% sure
Trying to filter malicious queries from valid queries is a very dangerous game and very difficult to achieve or administer operationally. Filtering can easily generate false positives, and have you block legitimate traffic.