DNS or the Domain Name System is the connection between a device and the internet. It essentially works as the directory for the internet. The web address entered by a user is sent to the DNS server, which converts it into the IP address format. For instance, you enter a URL (www.example.com); your browser will then send the request to DNS server which will convert it to an IP, such as 123.123.123.
There are many DNS servers that you can get at a price or for free, however, with your DNS set to the ISP server most of the time. Therefore, the internet provider is able to see all your web activity and the domains you access.
A DNS leak is a security flaw that reveals your web activity through sending requests to the ISP DNS server. If you are using a security tool such as VPN to secure your DNS requests, then it also means the request could leak to ISP DNS server instead of going to the anonymous VPN DNS servers.
This might be a privacy threat to most users, as they consider themselves secure and might be performing activities that involve their sensitive data. Also, the snoopers could benefit from this vulnerability to steal the user data as well as to target them for advertisements.
Therefore, most of the users nowadays check their DNS issue through online tools which detect if the DNS requests are leaking or not. Unfortunately, some services misguide users with confusing results to promote their product or the one that is paying them.
Luckily, there are certain ways through which you can judge the authenticity of a certain tool while checking for a DNS leak.
Step 1: (Read more...)
*** This is a Security Bloggers Network syndicated blog from The State of Security authored by Tripwire Guest Authors. Read the original post at: https://www.tripwire.com/state-of-security/featured/test-dns-leak-legitimate-results/
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