The Information Superhighway © 2007 D. J. Foreman

The Information Superhighway What is it? Why would I want to use it? How do I get to it? What is an Internet address? How do I navigate? What terms do I need to know? What features exist? © 2007 D. J. Foreman

NO OWNER!!!!! NO CONTROL!!!!! What is it? A collection of interconnected networks A collection of databases Organized on a ‘handshake’ basis NO OWNER!!!!! NO CONTROL!!!!! © 2007 D. J. Foreman

Why would I want to use it? Electronic mail Extend beyond local ‘paper’ library Access most recent data Interactive data repositories Speed - access & search Computer-accessible data © 2007 D. J. Foreman

How do I get to it? Three methods (your choice): Direct connection in all dorms Dial-up connection from any telephone Hi-speed line (cable, DSL) © 2007 D. J. Foreman

a digression on addressing Internet Protocol (IP) address formats address of a machine dotted decimal: 128.226.1.1 domain name: binghamton.edu depends on network connection desires of system owner abilities/desires of name server owner "protocol" - a set of rules for communicating © 2007 D. J. Foreman

concepts E-mail addresses: name@domain Note TWO parts: a user at a machine foreman@128.226.6.4 or foreman@bingsuns.binghamton.edu © 2007 D. J. Foreman

What about the World Wide Web??? Wait a minute!!! What about the World Wide Web??? © 2007 D. J. Foreman

WWW A set of computer systems containing specially formatted files HyperText Markup Language (HTML) running a Web Server program (eg. Apache) accessible with a ‘browser’ Netscape, Firefox, Mozilla Internet Explorer Opera © 2007 D. J. Foreman

Internet Domains - 1 Internet Corp. for Assigned Names & Numbers (ICANN – manages names) COM commercial ORG organizations NET network ‘connections’ EDU educational institutions GOV government sites MIL military sites © 2007 D. J. Foreman

Internet Domains – 2 approved, but not well-used AERO aviation industry BIZ business or firm CAT Catalan language & culture COOP business co-ops INFO informational sites JOBS human resource mgmt community MUSEUM museums NAME personal PRO DR's, lawyers, accountants TRAVEL Travel & tourism companies © 2007 D. J. Foreman

Proposed Internet Domains .agent .arts .auction .chat .church .club .family .free .game .gmbh .golf .hola .inc .kids .law .llc .llp .love .ltd .med .mp3 .school .scifi .shop .soc .sport .tech .travel .video .xxx © 2007 D. J. Foreman

Web Server Error Messages 415 SERVICE_UNAVAILABLE 500 INTERNAL_SERVER_ERROR 501 NOT_IMPLEMENTED 502 BAD_GATEWAY 503 SERVICE_UNAVAILABLE 506 VARIANT_ALSO_VARIES 400 BAD_REQUEST 401 UNAUTHORIZED 403 FORBIDDEN 404 NOT_FOUND 405 METHOD_NOT_ALLOWED 408 REQUEST_TIME_OUT 410 GONE 411 LENGTH_REQUIRED 412 PRECONDITION_FAILED 413 REQUEST_ENTITY_TOO_LARGE 414 REQUEST_URI_TOO_LARGE © 2007 D. J. Foreman

The Internet Getting Started Browsers Chrome Firefox Internet Explorer Non-browser programs ftp transferring files telnet/SSH logging in to remote computers © 2007 D. J. Foreman

Accessing Remote Systems © 2007 D. J. Foreman

Navigation Tools FTP - to get/put files from/to remote machines Telnet/SSH - to do work remotely Many free and pro ($) client versions available for both Telnet and FTP © 2007 D. J. Foreman

FTP File Transfer Protocol Getting (downloading) Putting (uploading) © 2007 D. J. Foreman

FTP -2 ftp <site name> example: ftp dforeman.cs.binghamton.edu login: anonymous password: <your SUNY email address> example: ftp dforeman.cs.binghamton.edu password foreman@binghamton.edu A demo © 2007 D. J. Foreman

Telnet Access to do work Telnet <system name> login: <your ID for the remote system> (sometimes, “guest” is allowed) password: <your pw for remote system> A demo © 2007 D. J. Foreman