Introduction to Network Security

Why Need Security ?

1. There is a lot information in our computer
2. These data are store in text file &/@ database
3. Security is needed to against unauthorized parties

Security Fundamental Principal

CIA

  C-confidentiality
   I-integriti
  A-availability

Type of Attack

1. Interruption: somehow disrupt the service being provided by the network
2. Interception: eavesdrop on communication meant to be private @ confidental
3. Modification: tamper with information @ network resourses
4. Fabrication: counterfeit information @ network resources @ services are inserted into the network