Basic Page: http://www.coolnerds.com/Newbies/whatIsNet/whatIsNet.htm
The Internet is a connection between your computer and millions of other computers.
WARNING: Browsing the Internet without an up to date virus program is like you walking into a crowded football field and kissing everyone you meet. The only thing preventing your computer from picking up viruses of various kinds is the virus protection software on your computer - which has to be good, and has to be constantly updated.
Between your computer and the Internet is an Internet Service Provider (ISP) that you pay to bring the Internet to your house. It might be a cable company, a satellite company, a "Digital Services Line" (DSL) phone company, or a phone company that just provides POTS (Plain Old Telephone Service). The picture at the left could show a DSL modem or a POTS modem.
If you have a POTS line, it will take a very long time for images to load, and you will need to tell your web browser not to load images unless you click on them. If you have a DSL line, you're in luck, because that's the least expensive "Broadband" (very fast) Internet connection you can get to a house. The most expensive, after satellites, is T1 or T3, which are the kind of connections that go to schools and businesses. Danville JUST got a T3 connection - we HAD been running on a T1 - so we're going to get much faster service as soon as they finish installing it.
All the computers on the Danville side of the router (as opposed to the Internet side) are called an "INTRANET" (INTRA means INSIDE), as opposed to the INTERNET (INTER means BETWEEN OUTSIDES). So INTRAMURAL SPORTS mean sports that happen between the walls (murals) of your school - INTERMURALS are between schools.
you have a smart phone (with a web browser, like an iPhone) in school
and you are connected to the Danville wireless network, you are part of
our INTRANET and your websites are filtered by our router for
inappropriate material (although no router is perfect!).
A router gives each computer on the network its own IP address (either automatically, or by manual "static" settings). The "IP Address" is like a phone number - every computer on the Internet has its own. A "Static IP address" (one that doesn't change, and is advertise) is used for web servers, but "Dynamic IP addresses" that change as needed are used for personal computers.
Sometimes you can't connect to a website; other times it gets very slow. Where can problems occur?
Google has many different webservers, and each is on its own SUBDOMAIN. WWW is a subdomain, as is sites, or groups, or mail - each of these points to a different webserver designed to do special things. Don't take my word for it! Go to http://www.iptools.com and note how the "IP Address" of sites.google.com and groups.google.com are different.