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Figure 1: Architectural Diagram (placement in network)

1.6.2 Virtual hosts

The MEG appliance allows creation of virtual hosts. Using virtual hosts, a single appliance can appear to

behave like several appliances. Each virtual host can manage traffic within specified pools of IP

addresses, enabling the appliance to provide scanning services to traffic from many sources or

customers.

1.6.3 Clustering

The MEG appliance also allows grouping of appliances into clusters. A cluster is a group of appliances

that shares both its configuration and balances the network traffic. The cluster can contain:

• One cluster master. The master both synchronizes the configuration and balances the load of

network traffic to the other cluster members.

and at least one of the following:

• One cluster failover. If the cluster master fails, the cluster failover will seamlessly take over the

work of the cluster master.

• One or more cluster scanners. They scan traffic according to the policies synchronized from the

master.

Note that the master and the failover can also scan traffic.

1.6.4 MEG Operating System

The MEG operating system is a tailored version of Redhat Linux 9, Kernel 2.6.27-31 that integrates the

operation of all McAfee MEG support modules and provides the operational environment for executing the

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McAfee HARDWARE 1.4 Guida di Installazione Pagina 13