F5108 -CHAPTER 1 -cont SECURITY MODEL

OPEN SECURITY MODEL

• easy to implement
• few security measures
• simple password
• assume all users are trusted protected asset minimal and threat are minimal.
• free access for user
• implement data backup system in most case.

RESTRICTIVE SECURITY MODEL

• More difficult to implement
• more security measures
• firewall and identity server.
• some user are not trustworthy , protected asset are substantial and threat are likely to occur
• LAN that connected to WAN or internet usually use this type of model.

CLOSED SECURITY MODEL

• most difficult to implement
• all security measures
• assume all user are not trustworthy, protected asset are premium
• user access is difficult
• organization require high number and trained network admin to maintain tight security
• network admin need to have high skills and more time to administer

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SECURITY METHOD

• log on - log on form

• File system - can access only certain file + encrypt data along transmission

• Data Communication -encryption confidential data

• Administrative -different level user have different privilege access + admin define the rules.