Firewalls What is a Firewall? A choke point of control and monitoring Interconnects networks with differing trust Imposes restrictions on network services only authorized…

1. Network Security and Cryption 2. Introduction and Objectives So far we have learned how network hardware and software systems operate and how client- server applications…

Slide 1Why is Internet Security So Hard? Dr. Stephen Kent Chief Scientist- Information Security Slide 2 Internet Security  Security for the Internet includes both security…

1. Computer SecurityCS 426 Lecture 24 Firewalls (Most Slides taken from Prof. Peng Ning’s Slides on Network Security at NCSU) 2. Outline What are firewalls? Types Filtering…

1. Firewalls 2. What is a Firewall? A choke point of control and monitoring Interconnects networks with differing trust Imposes restrictions on network services…

Firewalls What is a Firewall?    A choke point of control and monitoring Interconnects networks with differing trust Imposes restrictions on network services …

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Slide 1 Ch 3 Firewall and Perimeter Security Slide 2 Contents Firewall –packet-filter firewall: filters at the network or transport layer –proxy firewall: filters at…