merkow ppt 12-JRM

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$Distance Education Math 120 Syllabus - College of Southern Nevada$

Data Network Types � Local Area Network � A network configuration designed for a limited space or geographic area such as a series of offices in the same building � Two common types of LANs are the campus area network (CAN) and the metropolitan area network (MAN) � Wide Area Network � A group of smaller LANs connected logically or physically � WANs can combine other subnetworks such as intranets, extranets, and virtual private networks (VPNs) to provide enhanced network capabilities © Pearson Education Information Security: Principles and Practices <strong>12</strong>
Data Network Types cont. � Internet � The Internet is an interconnection of different-sized networks (LANs) around the world � Intranet � An intranet is a local or wide area network based on TCP/IP, but with firewalls that limit the network’s access to the Internet � An intranet is more secure than the Internet because it has a restricted user community and local control � Extranet � An extranet is an intranet that allows select users outside of the firewalls to access the site © Pearson Education Information Security: Principles and Practices 13
Page 1 and 2: Information Security Principles and
Page 3 and 4: Network Security in Context � Con
Page 5 and 6: OSI Reference Model cont. © Pearso
Page 7 and 8: OSI Reference Model and TCP/IP cont
Page 9 and 10: OSI Reference Model and TCP/IP cont
Page 11: OSI Model and Security � Security
Page 15 and 16: Basic Security Infrastructures cont
Page 17 and 18: Basic Security Infrastructures cont
Page 19 and 20: Firewalls � Firewalls typically r
Page 21 and 22: Firewalls cont. � Bastion Hosts
Page 23 and 24: Firewalls cont. � Limitations of
Page 25 and 26: Application-Level Gateway Firewall
Page 27 and 28: Screened Host Firewall System (Sing
Page 29 and 30: Screened-Subnet Firewall System ©
Page 31 and 32: Intrusion Detection Systems (IDS) -
Page 33 and 34: Intrusion Detection Systems (IDS) c
Page 35 and 36: Virtual Private Networks (VPNs) �
Page 37 and 38: Virtual Private Networks (VPNs) con
Page 39 and 40: Virtual Private Networks (VPNs) con
Page 41: Summary � The Telecommunications,

merkow ppt 12-JRM

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