Chapter 6. DNS

DNS

Why devote an entire chapter to DNS? Isn’t DNS used to translate a host name to an IP address and that’s about it? Sure, that is a big and important part of DNS, but DNS is much more.

DNS servers are probably one of the most common targets of reconnaissance and exploit efforts. Your DNS server is a cherished prize for a hacker to compromise, so hackers are going to see how vulnerable it is by pounding on it for weaknesses. DNS servers are targeted for the following reasons:

  • DNS servers can provide a lot of reconnaissance information about hosts in preparation for launching an attack of a targeted network.

  • DNS is used to resolve host ...

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