Common Network Security Components Used to Mitigate Threats

When considering the deployment of a network or the modification of an existing network, evaluate each network component to determine its security strengths and weaknesses. This section discusses many common network security components.

Hosts and Nodes

A node is any device on the network. This includes client computers, servers, switches, routers, firewalls, and anything with a network interface that has a MAC address. A Media Access Control (MAC) address is the 48-bit physical hardware address of a network interface card (NIC) assigned by the manufacturer. A node is a component that can be communicated with, rather than only through or across. For example, network cables and patch ...

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