Introduction to Window Understanding the Internet Using Lecture 2 Chapter 2

Icons Task bar

Icons Task bar Start … pop-up menu Network Shortcuts Recycle bin

Title bar Menu bar Tool bar Minimize, maximize, exit Scroll bar, arrows and box Status bar Application workspace

Menu bar Toolbar Title bar Min, Max, Exit Scroll bar, box, arrows Status bar WordPad window details

Understanding the Internet Introducing the Internet Internet Connection Exploring Internet Services How the Internet Works Internet Software

Want to understand more about internet? go to: Want to understand more about internet? go to: Internet: The Network of Networks

Exploring Internet Services Electronic mail ( ): Staying in touch World Wide Web (WWW): Accessing information –hypertext –hyperlinks –URL

Exploring Internet Services FTP: Transferring files –FTP –downloading & uploading –anonymous FTP –compression software Usenet: Joining online discussions

Introducing the Internet The Internet’s history –importance of communication & socializing –from ARPNET to Internet –rise of a new mass medium

LANs and computers connected to the Internet are maintained by corporations, ISPs, and universities who sell Internet subscriptions to the public. Introducing the Internet A galactic network –Internet address or IP address = home.umm.ac.id –Internet service provider (ISP) Interoperability –cross-platform network

NSP: network service provider(IBM, MCI) ISP or Host (UCD, AOL) Client Internet elements

How the Internet Works: A Geography of Cyberspace Internet Service Providers (ISPs) Backbones Internet protocols (TCP/IP) –Internet protocol (IP) –transmission control protocol (TCP)

How the Internet Works: A Geography of Cyberspace Domain Name System (DNS) –gov –edu –mil –com –net –id –ac –co See for yourself how the domain name service operates. Access the NSLOOKUP page and type in a domain name such as Click the Run button, and you’ll see the IP address below. NSLOOKUP page See for yourself how the domain name service operates. Access the NSLOOKUP page and type in a domain name such as Click the Run button, and you’ll see the IP address below. NSLOOKUP page

Netscape Navigator and Microsoft Internet Explorer are the two leading browsers. Internet Software Internet service –client & Server

Accessing the Internet You will need: –Computer –Campus computing account –Modem quality v.90 56K bps modems :$15 - $150 if using other ISP’s check their list Settings –UMMNet –Software –Other softwareOther software

Making the connection UMMNet support for access Setting for dial-up connection: –configure modem –configure TCP/IP for dial-up –configure dial-up connection (PPP) PPP: point-to-point protocol

Fundamentals servers & clients An server runs on your ISP’s computer. When you send mail, the server sends your mail over the Internet. An client runs on your computer and enables you to read and reply to received messages, compose new ones, and forward mail. User ISP ClientServer

Fundamentals Telkom (TelkomNet) will do this for you, and guide you. For other ISP’s you need to understand the settings, or get customized files like TelkomNet Telkom (TelkomNet) will do this for you, and guide you. For other ISP’s you need to understand the settings, or get customized files like TelkomNet PC client running Netscape TCP/IP PPP SERVER MODEM

Fundamentals Information for –username (whnuser) –password (random, #’s, $, change) – address –POP server name (e.g. popmail.umm.ac.id) –SMTP server name (e.g. mail.umm.ac.id) SMTP: simple mail transport protocol POP: post office protocol

Pine vs. Webmail vs. Eudora Pine –software and messages always reside on campus server –subject to quotas –accessible by telnet by direct network connection or dial-up WebMail like Hotmail or GeckomailWebMail –requires web browser –requires dial-up or DN connection –SoftWare and messages reside on commercial server (where?!) Eudora –requires dial-up or DN connection –SW resides on your PC –you can choose where each message resides; flexible

Using Responsibly How to stay out of trouble –Do not use company for personal use –Do not give information you would not give by phone or in a letter –Open and send attachments with respect –Never respond to junk (spam) –Never use to harass or intimidate –When using company’s , never say anything you wouldn’t want your boss to see