Sunday, July 09, 2006

What are Internet, Intranet and Extranet?

WIKI LOGOI recently added the following shortest definitions for Internet, Intranet and Extranet in their Wikipedia articles, though they are not new concepts even out-of-date sometimes:

"The Internet can be briefly understood as a network of networks."
"Briefly, an intranet can be understood as a private version of the Internet."
"Briefly, an extranet can be understood as a private internet over the Internet."


Additionally, an internet (lowercase i) refers to any interconnected networks, including those not based on TCP/IP protocol suite. Therefore, an extranet can be referred to non-IP networks (such as IPX/SPX networks) interconnected over the Internet via VPN.

A short definition does not mean its connotation is "short" too, right?

For the above four definitions, the "Internet" one was what I learnt; the "Intranet" and "internet" ones are my personal understandings though some people say so as well; the "Extranet" one is newly defined by me, hence there is no people saying the same today, at least on the Internet covered by Google. :-)

Giving a brief definition actually needs a better understanding, and commonly makes it more easy to be understood by other people.

I like using brief definitions.

3 comments:

Alexis said...

Those are interesting definitions.

take care.

Erin cody said...

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