merkow ppt 12-JRM
merkow ppt 12-JRM merkow ppt 12-JRM
Basic Security Infrastructures � Router � A network traffic management device that, unbeknownst to the user, sits between subnetworks (LANs) and routes traffic intended for or leaving the network segments to which it’s attached � Packet Filter � A simple and effective form of protection that matches all packets against a series of rules © Pearson Education Information Security: Principles and Practices 14
Basic Security Infrastructures cont. � Packet Filter cont. � Basic Packet Filtering � Allows communication originating from one side of the communication path or the other � Identifies and controls traffic by examining the source, destination, port number, and protocol types � Stateful Inspection Packet Filtering � A more complex packet-filtering technology that keeps track of the state of the current connection to help assure that only desired traffic passes through © Pearson Education Information Security: Principles and Practices 15
- 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 and 12: OSI Model and Security � Security
- Page 13: Data Network Types cont. � Intern
- 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,
Basic Security Infrastructures cont.<br />
� Packet Filter cont.<br />
� Basic Packet Filtering<br />
� Allows communication originating from one side<br />
of the communication path or the other<br />
� Identifies and controls traffic by examining the<br />
source, destination, port number, and protocol<br />
types<br />
� Stateful Inspection Packet Filtering<br />
� A more complex packet-filtering technology that<br />
keeps track of the state of the current connection<br />
to help assure that only desired traffic passes<br />
through<br />
© Pearson Education Information Security:<br />
Principles and Practices 15
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