Internet servers

Internet Web servers

.	Today almost 100 million servers worldwide are connected to each other.
Google	NY Times	Yahoo	Amazon	LLI website resides in Toronto
				IRS

		Your ISP		NCC
		You		Class

.
The Internet is a world of interconnected server computers that serve clients (like you).
	Your ISP provides you with email and a connection to the World Wide Web of web servers.
	Web servers host collections of web-page files. The page we're looking at now is a file named 3-internetservers.htm. It resides on a server owned by our web host in Toronto, Canada. Click here to tour their facilities. When you write a website name into your browser, or click on a hyperlink, the server picks out the file you want and downloads it to your computer.

Internet email servers

			Yahoo

	Hotmail			Google gmail
An Internet cafe	NCC	The library	Your ISP Standard or AOL
You don't have to be home to access the Internet			You

Kinds of email

Standard ISP

AOL as ISP

Internet Service Provider

Optonline, Earthlink, etc.

AOL

It's getting more confusing!

These days, many companies are adopting the AOL model.

MSN, as an ISP, ties into Hotmail.

Yahoo (not an ISP) has tied in with SBC.

Server

Optonline, Earthlink, etc.

AOL

Protocol

POP3

Proprietary

Email client (program)

Outlook Express, Netscape Messenger, Eudora

AOL client

Access

Home computer

Anywhere

Messages and attachments, location

Automatically downloaded from server to home computer

Server, until downloaded

Webmail alternatives

Email program

Web browser

Access

Anywhere

Members only

optonline.net
earthlink.net -- etc.

AOL Anywhere

Server

Optonline, Earthlink, etc.

AOL

Free webmail services

Server

Yahoo, MS Hotmail, etc

Google

An email message is not a file.
You can send/receive files as email attachments.