IT104 >QUESTION and ANSWER : :

• Why has there been a dramatic increase in the number of computer related security incidents in recent years? 

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• What are some characteristic of Common Computer Criminals including their objectives?

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• Computer crime, or cybercrime > it's refers to any crime that involves a computer and a network, where the computers may or may not have played an instrumental part in the commission of a crime.

                   

Examples of crimes that primarily target computer networks or devices would include:

• Computer viruses
• Denial-of-service attacks
• Malware (malicious code)

Examples of crimes that merely use computer networks or devices would include:

• Cyber stalking
• Fraud and identity theft
• Information warfare
• Phishing scams

            

• What actions must be taken in Response to a Security Incidents?

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WHAT IS FIREWALL ?

FIREWALL 

  >is a secure and trusted machine that sits between a private network and a public network.The firewall machine is configured with a set of rules that determine which network traffic will be allowed to pass and which will be blocked or refused. In some large organizations, you may even find a firewall located inside their corporate network to segregate sensitive areas of the organization from other employees. Many cases of computer crime occur from within an organization, not just from outside.
Firewalls can be constructed in quite a variety of ways. The most sophisticated arrangement involves a number of separate machines and is known as a perimeter network. Two machines act as "filters" called chokes to allow only certain types of network traffic to pass, and between these chokes reside network servers such as a mail gateway or a World Wide Web proxy server. This configuration can be very safe and easily allows quite a great range of control over who can connect both from the inside to the outside, and from the outside to the inside. This sort of configuration might be used by large organizations.

• major classes of firewall design 

         

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