Today we are going to talk about what DNS is, including the DNS work principle, and the reason of DNS leak that makes your online information like email, facebook, twitter, tinder, even online bank be hacked.
DNS，which is short for Domain Name System，is a distributed database that maps domain names and IP addresses to each other on the World Wide Web. The address on the Internet is a numeric IP address, and the domain name is to memory easily. It enables users to access the Internet without remembering the IP strings that can be read directly by the machine.
The DNS work principle, for example, a domain name: abc.com, is to see this HTTP service. If you want to access the website, you need to resolve it. First, resolve it to a web server through a dedicated DNS server at the domain registrar on the fixed IP 211.221.1.xxx, then receive the domain name through the web server, the domain name abc.com is mapped to this server. After that, entering the domain name abc.com to access the website content. That is the whole process of domain name resolution is realized.
There are several main reasons for a DNS leak event, usually due to some form of a configuration error, VPN or network, or Microsoft Windows itself. It may also be because of some more malicious incidents, for example, an attacker controls your router.
The main factors that cause DNS leaks:
·Your operating system may have features that interfere with DNS traffic.
·Your DNS is configured to use a DNS server that is not controlled by VPN.
·An incorrect network configuration caused a DNS request leaks.
· Do not support IPv6 address.
How to prevent DNS leaks?
Using A VPN !!
Although we write this article based on the assumption that you should already use a VPN, this issue is worth repeating. A VPN service can easily hide your traffic and obscure IP addresses to prevent DNS leaks.
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