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Nessus Scanner 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 Nessus configuration.

Nessus Scanners and Nessus Professional

The following table lists the hardware requirements for Nessus scanners and Nessus Professional.

Scenario

Minimum Recommended Hardware

Scanning up to 50,000 hosts per scan

CPU: 4 2GHz cores

Memory: 4 GB RAM (8 GB RAM recommended)

Disk space: 30 GB

Scanning more than 50,000 hosts per scan

CPU: 8 2GHz cores

Memory: 8 GB RAM (16 GB RAM recommended)

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

Nessus Manager

The following table lists the hardware requirements for Nessus Manager.

Scenario

Minimum Recommended Hardware

Nessus Manager with 0-10,000 agents

CPU: 4 2GHz cores

Memory: 16 GB RAM

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

Nessus Manager with 10,001-20,000 agents

CPU: 8 2GHz cores

Memory: 64 GB RAM

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

Note: Engage with your Tenable representative for large deployments.

Virtual Machines

Nessus can be installed on a Virtual Machine that meets the same requirements. 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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