How Does The Internet Work? - Comments Page 2

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Posted by:

Mary Ann
13 Jul 2014

Bob, can you discuss VPNs in more detail? I'm interested in Hotspot Shield VPN which allows users to access foreign TV programs or blocked TV programs like AlJazeera English. Someone on a blog mentioned that his computer is set for the UK and can watch BBC, ITN, Sky, etc.

I am not clear about how to set up and use a VPN.

Thanks.

Posted by:

Butch Kemper
13 Jul 2014

The Domain Name Service system is simply complex :) I think Bob's description is good start to explain a complex system constructed from simple components.

The IANA is global coordinator of the DNS root. A complete explanation of the DNS root system is here: with lots of additional pages. The information contained on this website is very technical and cryptic but is helpful.

The 13 root servers are administered by 13 separate organizations and through the magic of IP Multicast protocol, each organization will duplicate their server at multiple strategic locations in the Internet. See the map at for more information.

A very good description of the DNS system can be found at which will answer many of Don's questions.

Butch
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