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dns.md

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DNS

Change DNS

trusted servers

trusted filtering servers

online test services

Standard Linux Configuration

If systemd-resolved is used /etc/resolv.conf is a link:

$ ls -l /etc/resolv.conf 
lrwxrwxrwx. 1 root root 37  1. Apr 14:12 /etc/resolv.conf -> /run/systemd/resolve/stub-resolv.conf

It is not recommended to replace this file when using systemd-resolved at all. systemd-resolved is not suited on machines were you run an 'real' DNS server (turn it off in this case).

NetworkManager could manage /etc/resolv.conf as well.

Split resolved

Overviews and Problems

Implementations

dnscrypt-proxy

Testing and tools

DNS changer software

DNS and Mail

Main Hardening

DNSSEC

DNSSEC is used between DNS servers but has failed to spread to 'DNS consumer' clients. For clients, the world now counts on DNS-over-TLS and DNS-over-HTTPS (but both only for browser at present).

What is my ip address

BGP

RPKI

RPKI software