21-03-2012, 01:55 PM
NETWORK SECURITY
networksecurity1.ppt (Size: 851.5 KB / Downloads: 83)
What is Internet?
The Internet is a worldwide IP network, that links collection of different networks from various sources, governmental, educational and commercial.
Types of Attacks
Passive
Active
Security Objectives
Identification
Authentication
Access Control
Data Integrity
Confidentiality
Non-repudiation
Identification
Something which uniquely identifies a user and is called UserID.
Sometime users can select their ID as long as it is given too another user.
UserID can be one or combination of the following:
User Name
User Student Number
Authentication
The process of verifying the identity of a user
Typically based on
Something user knows
Password
Something user have
Key, smart card, disk, or other device
Something user is
fingerprint, voice, or retinal scans
Access Control
The process of enforcing access right
and is based on following three entities
Subject
is entity that can access an object
Object
is entity to which access can be controlled
Access Right
defines the ways in which a subject can access an object.
networksecurity1.ppt (Size: 851.5 KB / Downloads: 83)
What is Internet?
The Internet is a worldwide IP network, that links collection of different networks from various sources, governmental, educational and commercial.
Types of Attacks
Passive
Active
Security Objectives
Identification
Authentication
Access Control
Data Integrity
Confidentiality
Non-repudiation
Identification
Something which uniquely identifies a user and is called UserID.
Sometime users can select their ID as long as it is given too another user.
UserID can be one or combination of the following:
User Name
User Student Number
Authentication
The process of verifying the identity of a user
Typically based on
Something user knows
Password
Something user have
Key, smart card, disk, or other device
Something user is
fingerprint, voice, or retinal scans
Access Control
The process of enforcing access right
and is based on following three entities
Subject
is entity that can access an object
Object
is entity to which access can be controlled
Access Right
defines the ways in which a subject can access an object.