Network Security: Understanding the Basics of Information Protection, Slides of Information Security and Markup Languages

Download Network Security: Understanding the Basics of Information Protection and more Slides Information Security and Markup Languages in PDF only on Docsity!

Network Security

What is Network Security?

• (^) Preventive process to mitigate un-desirable information flow

as well as to protect the network infrastructure from un-

authorized access, misuse, malfunctions, modifications and

destructions. (Fails to function normally or not/wrong functioning)

• (^) Network security starts from authenticating the user, once

authenticated, a firewall enforces access policies such as what

services are allowed to be accessed by the network users

• (^) Securing of Information & access control requires

Cryptographic techniques as a weapon.

Security Goals

Network Security Goals

• (^) Confidentiality: concerns with secrecy and privacy which means message should only be “ understandable ” to sender and intended receiver.
• (^) Integrity: assures that message is free from fake modifications (false addition or deletion) - (^) Origin Authenticity - (^) Non-repudiation - (^) Availability: means information (message, key, Certificate Verification) and medium (Certification Authority Server, online services) should be timely available on needed