Please Whitelist This Site?
I know everyone hates ads. But please understand that I am providing premium content for free that takes hundreds of hours of time to research and write. I don't want to go to a pay-only model like some sites, but when more and more people block ads, I end up working for free. And I have a family to support, just like you. :)
If you like The TCP/IP Guide, please consider the download version. It's priced very economically and you can read all of it in a convenient format without ads.
If you want to use this site for free, I'd be grateful if you could add the site to the whitelist for Adblock. To do so, just open the Adblock menu and select "Disable on tcpipguide.com". Or go to the Tools menu and select "Adblock Plus Preferences...". Then click "Add Filter..." at the bottom, and add this string: "@@||tcpipguide.com^$document". Then just click OK.
Thanks for your understanding!
Sincerely, Charles Kozierok
Author and Publisher, The TCP/IP Guide
NOTE: Using software to mass-download the site degrades the server and is prohibited.
If you want to read The TCP/IP Guide offline, please consider licensing it. Thank you.
TCP/IP Application Layer Addressing: Uniform Resource Identifiers, Locators and Names (URIs, URLs and URNs)
The Internet consists of millions
of interconnected servers, each of which is capable of providing useful
information to Internet users who request it. The more information a
network has, the richer it is, but the more difficult it becomes to
locate. In order to use information, we need to be able to find it,
and that requires at a minimum that we employ some means for labeling
each file or object.
For this purpose, TCP/IP has defined
a system of Uniform Resource Identifiers (URIs) that can be used
both on the Internet and on private TCP/IP networks. Each URI uniquely
specifies how a client can locate a particular resource and access it
so it can be used. URIs are subdivided into Uniform Resource Locators
(URLs) and Uniform Resource Names (URNs), which serve a similar
purpose but work in different ways.
In this section I describe the system
of addressing used on the Internet to identify files, objects and resources.
I begin with an overview, which introduces the concept of Uniform Resource
Identifiers (URIs), and explains the differences between URIs, URLs
and URNs. At the present time, URLs are used much more often than URNs.
Therefore, I have included a full subsection with several topics that
cover in detail the syntax of URLs, as well as important issues related
to how they are used. I also have a summary topic that gives a summary
overview of URNs and their role in Internet addressing.
|If you find The TCP/IP Guide useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider purchasing a download license of The TCP/IP Guide. Thanks for your support!|
Table Of Contents - Contact Us
The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005
© Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.