#lang en

<<TableOfContents()>>

= Description =
DNS is the phonebook of the internet.

= Definitions =
== Records ==
=== NS ===
Nameserver records gives a hint where to find the nameserver for the subdomain. See [[https://serverfault.com/questions/606291/can-one-server-do-dns-for-a-domain-and-a-subdomain|https://serverfault.com/]].

=== SSHFP ===
These records shows the fingerprint of your SSH server. Your DNS server needs to have DNSSEC enabled, otherwise this will not work.

https://unix.stackexchange.com/questions/121880/how-do-i-generate-sshfp-records

= Tools =
== Flushing ==
Sometime it's nessesary to flush the DNS servers of the big companies. These are the URL's to activate.
 * https://developers.google.com/speed/public-dns/cache
 * https://1.1.1.1/purge-cache/
 * https://cachecheck.opendns.com/

= Servers =
== Knot ==
=== Logging ===
Normally Knot is not logging anything. If you really want this, take a look at [[https://jpmens.net/2017/09/11/dns-query-response-logging-with-dnstap/|https://jpmens.net/]].

== Unbound ==
[[https://calomel.org/unbound_dns.html]]