HacksLinux SysAdmin Notes
This tutorial describes how to install and set up DNSCrypt on Debian based systems, like Linux Mint, Ubuntu etc.
DNSCrypt Proxy - is a tool for securing communications between a client and a DNS resolver.
It encrypts DNS requests using the DNSCrypt Protocol and pass them to an upstream server, by default OpenDNS.
A [CNAME] Record or a Canonical Name Record, specifies that the domain name or subdomain is an alias of another, canonical domain name.
An [A] Record or an Address Record, assigns an IP address to a domain or subdomain name.
The /etc/resolv.conf configuration file contains information that allows a computer to convert alpha-numeric domain names into the numeric IP addresses.
The process of converting domain names to IP addresses is called resolving.
Reverse DNS is an IP address to domain name mapping - the opposite of Forward DNS which maps domain names to IP addresses.
If you need to find out all the sub-domains of a given domain name, you can try AXFR request.
This hint works only if the NS that you are querying is configured to allow AXFR requests.
There are several reasons why you may want to use alternative DNS servers :
Here is a list of Free public DNS servers.
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