2. 1 Information Security ( 資訊安全 )

3. 2 What is Security? Security meaning: What kind of thing that should be protected? Protection mechanism: (Security Policy) –Concept Isolated the Object container Security Policy related with the users and the objects –Methods: Layer approach (Hybrid) Highest ideals in protection –Exposing all but reveal nothing

4. 3 Network Security Information security v.s. network security

5. 4 Network Public: –Internet Specific: –Enterprise level –Home level Ad Hoc:

6. 5 Transmission Media Guided Media –T–Twisted-pair –C–Coaxial cable –F–Fiber-optic cable Unguided Media –R–Radio wave –E–ElectroMagnetic Wave Very high frequency (VHF) Ultro high frequency (UHF) Microwave band InfraRed

7. 6 Network Threats Targets Jumbling Message snooping Virus/Worm diffusion Communication Blocking Despiteous attacking Human careless

8. 7 Ways to prevent Technologies: –Targets identification –Message encryption –Virus scan –Routing Trace –Firewall Management (Security policy)

9. 8 Text book cryptography and network security by Atul Kahate[McGraw-Hill] Powerpoint Files: –ftp://im1.im.tku.edu.tw Prof_Lee information securityftp://im1.im.tku.edu.tw Related book:

10. 9 Course Evaluation Midterm test (40%) Presentation (40%) Course participation –Homework (10%) –Roll call (10%) –Others (10%)

11. 10 問題討論 利用一些轉換機制，將金融卡密碼轉換 後寫出 ? 如何設計一個安全的機制，控制在外的 核子潛艦發射核子飛彈 ? 古代中國的帝王，如何調度領兵在外的 將領 ?