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Hardware Requirements

Enterprise networks can vary in performance, capacity, protocols, and overall activity. Resource requirements to consider for Nessus deployments include raw network speed, the size of the network being monitored, and the configuration of Nessus.

Nessus Hardware Requirements

Scenario

Minimum Recommended Hardware

Nessus scanning up to 50,000 hosts

CPU: 1 dual-core 2 GHz CPU

Memory: 2 GB RAM (4 GB RAM recommended)

Disk space: 30 GB

Nessus scanning more than 50,000 hosts

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

Memory: 2 GB RAM (8 GB RAM recommended)

Disk space: 30 GB (Additional space may be needed for reporting)

Nessus Manager with up to 10,000 agents

CPU: 1 dual-core, 2GHz CPU

Memory: 16 GB RAM

Disk space: 30 GB (Additional space may be needed for reporting)

Nessus Manager with up to 30,000 agents

CPU: 1 dual-core, 2GHz CPU

Memory: 64 GB RAM

Disk space: 30 GB (Additional space may be needed for reporting)

Virtual Machines

Nessus can be installed on a Virtual Machine that meets the same requirements specified. If your virtual machine is using Network Address Translation (NAT) to reach the network, many of the Nessus vulnerability checks, host enumeration, and operating system identification are negatively affected.

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