chapter03 - Outline n Study network design elements n Explore network components n Discover how subnets are created Chapter#3 n Learn how to implement

chapter03 - Outline n Study network design elements n...

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1 Secure Network Design Chapter #3: Network Security Outline n Study network design elements n Explore network components n Discover how subnets are created n Learn how to implement common protocols n Learn how to implement common services Network Security 2 Network Elements and Components n DMZ n Accessibility, costs, configuration, updates Network Security 3 Private Network External Firewall Internal Firewall Internet DMZ Network Elements and Components n Subnetting n CIDR n Partitioning IPv4 address space n 192.168.x.x/17 – 17 bits for the network, 15 bits for hosts Network Security 4
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2 Network Elements and Components n VLAN n Defines domains for certain protocols at the data link level n It uses a single switch and divides it into multiple domains and/or multiple network segments n Scalability, flexibility – limiting traffic n Controlling access – e.g. server Network Security 5 Network Elements and Components n Trunking n Spanning a VLAN over several switches n Packets from a single VLAN travel over several switches n Physical placement of devices is combined with logically and programmatically assigning ports to VLANs n Firewalls and other segmentation devises shall not be breached!
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  • IP address, remote access, Secure Network Design

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