July 2017
Beginner to intermediate
358 pages
10h 54m
English
Content preview from Building Microservices with Go
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DNS
A DNS attack utilizes a UDP flood to take out a DNS server; many requests are made to query a DNS server. The requests are designed to return a very large reply from a tiny request to maximize the efficiency of the attack, since the response is often not received by the sender.
The attack that we looked at earlier, which targeted Dyn's infrastructure, taking out many websites on the east and west coast of America in October 2016, was in this form. Unlike most DNS attacks, the Mirai net did not use Reflection. It allowed the responses to be returned to the sender, which was possible due to the enormous number of compromised devices.
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