Ch20

Cryptography and Network Security Third Edition by William Stallings Lecture slides by Lawrie Brown

Chapter 20 – Firewalls ,[object Object],[object Object]

Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

What is a Firewall? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Firewall Limitations ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Firewalls – Packet Filters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Attacks on Packet Filters ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Firewalls – Stateful Packet Filters ,[object Object],[object Object],[object Object],[object Object]

Firewalls - Application Level Gateway (or Proxy)

Firewalls - Application Level Gateway (or Proxy) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Firewalls - Circuit Level Gateway

Firewalls - Circuit Level Gateway ,[object Object],[object Object],[object Object],[object Object],[object Object]

Bastion Host ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Access Control ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Trusted Computer Systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Bell LaPadula (BLP) Model ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Evaluated Computer Systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Ch20

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