1. Firewalls 2. What is a Firewall? A firewall is a hardware or software (or a combination of hardware and software) that monitors the transmission of packets of digital…

CHAPTER 1 CHAPTER 1 INTRODUCTION 1. 1 Overview Packet filtering is a network security mechanism that works by controlling what data can flow to and from a network. We provide…

Slide 1IUT– Network Security Course 1 Network Security Firewalls Slide 2 IUT– Network Security Course 2 Why Firewalls? The Internet allows you access to worldwide resources,…

Slide 1 FIREWALLS Slide 2 What is a Firewall? A firewall is hardware or software (or a combination of hardware and software) that monitors the transmission of packets of…

Slide 1 FIREWALLS The function of a strong position is to make the forces holding it practically unassailable —On War, Carl Von Clausewitz On the day that you take up your…

Slide 1 Firewalling Techniques Prabhaker Mateti Slide 2 ACK Not linux specific Not linux specific Some figures are from 3com Some figures are from 3com Slide 3 Slide 4 Components…

Slide 1 1 Lecture 20: Firewalls motivation ingredients –packet filters –application gateways –bastion hosts and DMZ example firewall design using firewalls – virtual…