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Introduction to Computers
Getting Online
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Ways to Connect to the Internet
Direct connection Wireless (Wi-Fi) Remote terminal connection Gateway connection LAN Modem High-speed data link ISDN DSL Cable
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Two PC Internet Connection Issues
Software Network connection
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Winsock Lets multiple software applications work with multiple network connections
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Firewall A firewall blocks unauthorized entry into a network that is connected to the Internet
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Examples of Firewalls Proxy server Packet filter Application gateway
Circuit gateway
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Two Corporate Web Spin-offs
Intranet Extranet
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Intranet A LAN or WAN that uses TCP/IP protocols but belongs exclusively to a corporation, school or organization
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Extranet An intranet accessible to outside Internet users
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Internet Business Concerns
Ownership Libel Appropriate use
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E-commerce Doing business online
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Two Payment Options for E-Commerce Consumers
One-time credit card purchase Online account
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Methods for Providing Personal Information Security on Web Sites
Secure sockets layer (SSL) and encryption Secure HTTP (S-HTTP)
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Getting Online, Working Online
Lesson 8B Getting Online, Working Online
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