Telnet

Tom Kelliher, CS14A

Feb. 10, 1997

Announcements:

1. I will be out of town Wednesday.

2. Novell accounts?

Outline:

1. A brief history of the Internet.

2. Deciphering URLs.

3. Telnet exercise.

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?

Deciphering URLs

• Uniform Resource Locator.

• Read A Beginner's Guide to URLs.

Consider the URL

http://keystone.westminster.edu/~kelliher/

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

2. keystone.westminster.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.

A few additional examples:

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