Introduction to Computers

Lesson 8BLesson 8B

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Ways to Connect to the Internet

Direct connectionRemote terminal connectionGateway connectionLANModemHigh-speed data linkISDNDSLCable

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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)

Lesson 8BLesson 8B

Getting Online, Working Getting Online, Working OnlineOnline