Thursday, 1 February 2018

Router security part 2 (how DNS works

Domain name system (DNS) is a protocol for how computers exchange data on the internet, this works by the DNS converting a domain name like "" into an Internet Protocol address like that computers can use to identify each other on the network. 

Also, the last part of a web address makes it easy to recognise what category the website is in. eg. .com - commercial websites, .edu - educational organisations, .gov - government.

DNS is changeable through your PC or router as shown in part 3, this is useful for blocking content before it reaches you pc (if configured on your router), or changing the DNS on a single PC such as a child's PC to block adult content.

This works by the DNS provider having a database of know bad websites, whether that be phishing websites, adult content or extreme violence, which will be constantly updated, keeping the user as safe as possible.

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