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DNS Explained


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by Whil Hentzen
Length: 14 pgs
Formats Available: PDF
Press date: 2006/11/21
Source code: N/A

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Abstract

DNS. In a general sense, it's what tells your computer that www.example.com is attached to 192.0.34.166, so that you can enter 'www.example.com in your Web browser instead of the IP address itself. You can live a long time without knowing anything about DNS, and, in a perfect world, that's how it should be, just as you don't have to know the mix of fuel to oxygen that your carburetor delivers to let your car engine run. But it's not a perfect world, not quite yet, and so there are times, particularly as a Web site developer, that you'll need to know a bit, or a lot, about DNS.


Table of Contents

1. Preface
1.1. Copyright
1.2. Revisions
1.2.1. History
1.2.2. New version
1.2.3. Feedback and corrections
1.3. References and acknowledgments
1.4. Disclaimer
1.5. Prerequisites

2. The four players in the DNS architecture
2.1. The DNS database
2.2. DNS server - architecture
2.2.1. Authoritative
2.2.2. Caching
2.3. DNS server - software
2.4. DNS client
2.5. Zone file

3. Individual Surfer

4. Setting up a Web server/Web site
4.1. Domain name
4.2. Navigating to a brand new domain
4.3. Live example
4.4. Hosting your site at a third party site
4.5. Hosting your site yourself
4.6. Turning over your DNS to a third party
4.7. "It's a lot worse than that"
4.8. Summary of authoritative and caching server roles

5. Zone files

6. Reverse DNS

7. Where to go for more information


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