Princess Nora Bint Abdulrahman 
     University College of computer and 
      information sciences Networks 
           department 
      Networks Security (NET 536) 
       Prepared by Dr. Samia Chelloug 
      E-mail: samia_chelloug@yahoo.fr 
  Content
  1.Basics of computer and network security. 
  2.Impact of network architecture on network 
   security. 
  3.Basics of network design. 
  4.Firewalls and virtual private networks. 
  5.Internet and wireless network security. 
  6.Impact of operating systems models on 
   network security. 
  7.How to secure an application? 
  References 
  1.Bahrouz A.Forouzan, ‘Data Commnications 
   and Networking’, Fourth Edition, 2007. 
  2.William Stallings, ‘Cryptography and Network 
   Security: Principles and practice’, Fifth edition, 
   2011. 
  3.Eric Cole, Ronald L.Kruz, James W.Conley, 
   ‘Network Security Fundamentales’, Wiley 
   2007. 
 Part 3 : IPSec
   Introduction
    Internet was tiny and relatively private. Today it is 
    enormous and truly public. 
    A number of methods have evolved over the years 
    to address the need for security. Most of them are 
    focused on the higher layers of the OSI model. 
    For example, SSL ( secure sockets layer) can be 
    used for certain applications like world wide web 
    or file transfer protocol (FTP). 
    IPSec is not a single protocol. It is a set of services 
    and protocols that provide a complete security 
    solution for an IP network.