Red Hat NETWORK 3.6 - Uživatelská příručka stáhnout pdf (Strana 6)

> highlight all interactive and encrypted network sessions

> detect when new hosts are added to a network

> track exactly which systems communicate with other systems and on what ports

> detect what ports are served and what ports are browsed by each system

> detect how many hops away each monitored host is

This document provides directions for deploying, configuring and operating the PVS. Please

see the PVS Overview whitepaper in the Expert Resources section of the Tenable web site for

a description of the PVS technology and example use cases.

PRE-INSTALLATION

To ensure a streamlined installation process, it is important to ensure that the appropriate

hardware, software and licensing requirements are in place prior to installation.

HARDWARE REQUIREMENTS

Enterprise networks can vary in performance, capacity, protocols and overall activity. PVS

deployments should consider raw network speed, the size of the network being monitored

and the configuration of the PVS application when determining resource requirements.

The following chart outlines some basic hardware requirements for operating PVS:

Scenario

Recommended Hardware

Passive Vulnerability

Scanner managing up to

20,000 – 50,000 hosts *

CPU: 1 dual-core 2 GHz CPU

Memory: 2 GB RAM (4 GB RAM recommended)

Passive Vulnerability

Scanner managing in

excess of 50,000 hosts

CPU: 1 dual-core 3 GHz CPU (2 dual-core recommended)

Memory: 2 GB RAM (4 GB RAM recommended)

HDD: 72 GB at 10,000 rpm (72 GB at 15,000 rpm

recommended)

* Note: The ability to monitor a given number of hosts rests heavily on the

bandwidth, memory, and processor power available to the system running PVS.

Please research your VM software vendor for recommendations as VMs typically

see a 12 to 30% loss in efficiency compared with dedicated servers.

Processor requirements will increase with greater throughput and number of network

interfaces. Memory requirements will increase for networks with more hosts. The

requirements for both of these components are affected by options such as a long report-

lifetime and enabling some or all of the PVS optional services in the configuration file.

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Red Hat NETWORK 3.6 - Uživatelská příručka Strana 6