Cloud Deployment Hardware Requirements

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

The following chart outlines some basic hardware requirements for operating Tenable Nessus Network Monitor:

Version Installation scenario RAM Processor Hard Disk
All Versions Tenable Nessus Network Monitor managing up to 50,000 hosts * (**) 2 GB RAM (4 GB RAM recommended) 2 2GHz cores 20 GB HDD minimum
Tenable Nessus Network Monitor managing more than 50,000 hosts ** 4 GB RAM (8 GB RAM recommended) 4 2GHz cores 20 GB HDD minimum
Tenable Nessus Network Monitor running in High Performance mode 16 GB RAM (HugePages memory: 2 GB) 10 2GHz cores with hyper-threading enabled 20 GB HDD minimum

*The ability to monitor a given number of hosts depends on the bandwidth, memory, and processing power available to the system running Tenable Nessus Network Monitor.

**For optimal data collection, Tenable Nessus Network Monitor must be connected to the network segment via a hub, spanned port, or network tap to have a full, continuous view of network traffic.

Note: Research your VM software vendor for comparative recommendations, as VMs typically see up to a 30% loss in efficiency compared to dedicated servers. Tenable Nessus Network Monitor supports VMware's vmxnet3 driver.

High Performance Mode

To run Tenable Nessus Network Monitor in High Performance mode, a minimum of two of the following types of Intel NICs are required; one as a management interface and at least one as a monitoring interface:

  • e1000 (82540, 82545, 82546)
  • e1000e (82571, 82574, 82583, ICH8.ICH10, PCH.PCH2)
  • igb (82575, 82576, 82580, I210, I211, I350, I354, DH89xx)
  • ixgbe (82598, 82599, X540, X550)
  • i40e (X710, XL710)
  • NT40A01-4x1