3. Extranet
internet protocol
extranet
internal

4. HTML, Hypertext
Transfer Protocol (HTTP) , Simple Mail
Transfer Protocol (SMTP)
intranet
extranet

5. server
digital certificate user
authentication, encryption
(virtual private
network)

7. Extranet
extranet
, extranet
Extranet
extranet

8. extranet
Extranets
extranet
extranet
extranet

9. extranet
extranet
extranet.

10. • Extranet
,

13. Extranet
1. Extranet
TCP/IP
2.
3.

14. Extranet
•

15. •
Extranet
•

16. •

17. Extranet
1.
2.

18. 3.
Private Newsgroup)
4.
Extranet
5.
electronic data interchange (EDI)

19. Extranet
1.
2.
3.
4.
web browser

20. 5.

21. Extranet
1. VPN Internet
Private
2. Internet
3.
4. intra <---VPN over
Internet ---> intra)
5.

23. Productivity)
3
1.
Efficiency)

24. 2.
Memorability)
3.
Error Reduction)

25. •

27. (Open Internet Technologies)
’

28. Virtual
Private Network)

30. LAN
-

31. LAN
1.
@yourcompany.com

32. -
@

33. 2. Back Office:
Back Office

34. 3. Off-line Catalog :
CD-Rom
Offline

35. CD-ROM
-

36. 4.
Online Catalog

37. 5.
?

38. 6.
HTML

39. 7. Enquiry
Form:

40. 1.
2.

41. Countrywide
Home Loans
Platinum Lender Access
500

42. Marshall Industries
Marshall
24 Partner Net
Point–of-sale)

43. 1. US West Facility Check US West
Intranets
Facility Check
,
, ,
, ,
2-3

44. 2. (Other
Plans for the Future) Chrysler
Intranets 7 One Servers
6,000
,

45. ,
Entergy Intranets Entergy Net
12,000
,
US West

46. Global Village Intranets
,