Uncover DNS background files: DNS series of five

In the previous blog, we introduced the architecture of DNS, the common records, also introduced the configuration of the secondary server, today we will introduce some of the files behind the DNS server. In fact, the work of the DNS server relies on these files, understand the background files of DNS, to better understand the DNS server, but also let you understand why there are experts say the best tool to configure DNS is Notepad.

The files used by the DNS server are not complex, one is the boot file, which is responsible for storing the startup information of the DNS server; one is Cache.dns, which is responsible for storing the domain name and IP address of the root server; and one of the most important files is the zone data file, which is responsible for all DNS records These files are in the \windows\system32\dns directory, we find the responsible for resolving the hexun.com zone DNS server 202.99.16.1, to analyze this DNS server to use the above-mentioned files.

One boot file

First look at the boot file, oddly, in the DNS server C:\Windows\System32\DNS directory, we did not find the boot file, as shown in the following figure, then why?

At this point because the DNS boot information can have three ways to save, one can be saved in the boot file, two can be saved in the registry, and three can be saved in active Directory. Microsoft may be afraid that the user mistakenly deleted the boot file, so by default, the bootstrap information is saved in two different ways. If we want to view the contents of the boot file, we first want to modify how the DNS server bootstrap information is saved. Select to view the properties of the DNS server in DNS Manager, as shown in the following illustration.