1. Introduction to Computers Lesson 8B

2. home Ways to Connect to the Internet Direct connection Remote terminal connection Gateway connection LAN Modem High-speed data link ISDN DSL Cable

3. home Two PC Internet Connection Issues Software Network connection

4. home Winsock Lets multiple software applications work with multiple network connections

5. home Firewall A firewall blocks unauthorized entry into a network that is connected to the Internet

6. home Examples of Firewalls Proxy server Packet filter Application gateway Circuit gateway

7. home Two Corporate Web Spin-offs Intranet Extranet

8. home Intranet A LAN or WAN that uses TCP/IP protocols but belongs exclusively to a corporation, school or organization

9. home Extranet An intranet accessible to outside Internet users

10. home Internet Business Concerns Ownership Libel Appropriate use

11. home E-commerce Doing business online

12. home Two Payment Options for E- Commerce Consumers One-time credit card purchase Online account

13. home Methods for Providing Personal Information Security on Web Sites Secure sockets layer (SSL) and encryption Secure HTTP (S-HTTP)

14. Lesson 8B Getting Online, Working Online

15. home Review Questions What is Winsock? What is a firewall? What is the difference between an intranet and an extranet? What is SSL?