INTRODUCTION TO NETWORK SECURITY & COMPUTER

WHAT IS COMPUTER SECURITY

• measures to protect data during transmission across the network.

• generic name for the collection of tools designed to protect data and to prevent hackers.

• measures to protect data during their transmission over a collection of interconnected networks

Three aspects of information security EXCEPT:

• security attack

• SECURITY MECHANISM

• SECURITY SERVICES

• NETWORK SECURITY

SECURITY ATTACK:

• ANY ACTION THAT COMPROMISES THE SECURITY OF INFORMATION THAT OWNED BY ORGANIZATION

• A MECHANISM THAT IS DESIGNED TO DETECT,TO PREVENT OR RECOVER FROM SECURITY ATTACK

• A SERVICES THAT ENHANCES THE SECURITY OF DATA PROCESSING SYSTEM AND INFORMATION TRANSFER

SECURITY SERVICES EXCEPT

• CONFIDENTIALITY

• AUTHENTICATION

• NON REPUDIATION

• INTERCEPTION

SECURITY ATTACK

• AUTHENTICATION

• MODIFICATION

• FABRICATION

Modification of data stream

• PAASIVE ATTACK

• ACTIVE ATTACK

• MODIFY ATTACK

• SECURITY ATTACK

programs can be installed on computer systems to observe traffic, storing information (ID/Passwords) that can be used to access other systems.

• DENIAL OF SERVICES

• HACKING

• SNIFFING

• PORT SCANNING

is a program that can infect other programs by modifying them to include a copy of itself

• HACKING

• VIRUS

• DENIAL OF SERVICES

The assurance that the communicating entity is the one that it claims to be.

• PEER ENTITY COMMUNICATION

• AUTHENTICATION

• DATA INTEGRITY

Provides protection against denial by one of the entities involved in a communication of having participated in all or part of the communication.

• NON REPUDIATION

• FABRICATION

• MODIFICATION