E-Mail and Web Clients

Tom Kelliher, CS 102

Sept. 10, 1997

Announcements

Distribute remaining account info.

Assignment

None today. For the ``new'' students, see Sept. 5's assignment. Turn in on Friday.

Choosing a Good Password

1. Guidelines.

2. Why is it important?

3. See http://phoenix.goucher.edu/password.html .

4. Is a good password any defense if you forget to log off?

5. The real issue: authentication and determination of ownership and responsibility.

6. Alternatives to passwords?

E-Mail Addresses

1. E-mail: username, hostname.

2. Top-level domains: edu, com, ca, au, uk. What others?

Deciphering URLs

• Uniform Resource Locator.

• Read A Beginner's Guide to URLs.

Consider the URL

http://phoenix.goucher.edu/~kelliher/

1. http --- service name. Other possibilities: gopher, telnet, news, etc.

2. phoenix.goucher.edu --- server name. The name of the Internet computer to which this request is directed.

3. ~kelliher/ --- location of information on server. ``Drill down'' through folders.

4. Do I have to type the whole thing?

A few additional examples:

gopher://gopher.psu.edu
telnet://martini.eecs.umich.edu:3000

A Brief History of the Internet

1. The Internet.

2. Telnet: remote login.

3. E-mail, discussion lists: private communications.

4. Ftp: file transfer.

5. Chats, IRC, role-playing games: electronic ``lounges.''

6. USENET, bulletin boards: public communications.

7. Gopher: text-based ``web.''

8. World Wide Web: multi-media. The whole nine yards.

9. The future?

Exercises

1. Shutdown and boot processes.

2. Sending e-mail --- any questions?

3. Using a Web browser: Internet Explorer

4. Printing a Web page.

5. Locating resources on the Web. Find the home pages for two companies: TYAN Computer and Gateway 2000. Can you find more than one home page for Gateway 2000?
   1. Find the Gateway 2000 Reading Room and read ``Technologies: A PC Guide.''

   2. At Tyan, find the page for the S1563S motherboard. Go to the clickable motherboard page and identify some of the parts of the motherboard.

6. Changing your password?