Chapter 8:Network Security Chapter goals: understand principles of network security: cryptography and its many uses beyond "confidentiality" ·authentication ·message integrity security in practice: firewalls and intrusion detection systems security in application,transport,network,link layers Security 8-2Chapter 8: Network Security Chapter goals: ▪ understand principles of network security: • cryptography and its many uses beyond “confidentiality” • authentication • message integrity ▪ security in practice: • firewalls and intrusion detection systems • security in application, transport, network, link layers Security 8-2