Download - Domain name system
Transcript
![Page 1: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/1.jpg)
Domain Name System
![Page 2: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/2.jpg)
What is DNS?
![Page 3: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/3.jpg)
DNS is the distributed naming system for computers, services or any resources connected
to the Internet or a private network
![Page 4: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/4.jpg)
192.248.56.21
![Page 5: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/5.jpg)
![Page 6: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/6.jpg)
www.jfn.ac.lk
![Page 7: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/7.jpg)
![Page 8: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/8.jpg)
How it works?
Source: http://computer.howstuffworks.com/dns.htm
![Page 9: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/9.jpg)
Source: http://computer.howstuffworks.com/dns.htm
![Page 10: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/10.jpg)
Source: http://en.wikipedia.org/wiki/File:An_example_of_theoretical_DNS_recursion.svg
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DNS RECORDS
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AThis record return
32bit ipV4 Address
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AAAA
This record return 128bit ipV6
Address
![Page 14: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/14.jpg)
CNAME
Alias of one name to another
![Page 15: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/15.jpg)
MX
Map a domain to a list of massage transfer agents for
that domain
![Page 16: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/16.jpg)
NS
Connecting to the DNS zone
![Page 17: Domain name system](https://reader034.vdocuments.net/reader034/viewer/2022051817/5482434ab4af9f3d608b4661/html5/thumbnails/17.jpg)
Questions ?