NNM Software Requirements

Note: Standard support for NNM 5.12 ends 09/30/2022. Tenable recommends updating to NNM 6.0.0 or later. Otherwise, you will not be able to report issues and bugs. Users that connect to Tenable.io using a web proxy need to upgrade to NNM 6.1.0.

Nessus Network Monitor is available for the following platforms:

Version Software Requirements
  • Red Hat Linux ES/ CentOS 64-bit
  • Red Hat Linux ES 7 / CentOS 7 (through 7.9) 64-bit

    Note: For this version, NNM requires that you have systemd and firewalld on your system.

  • Red Hat Linux ES 8 / CentOS 8 (through 8.5) 64-bit

    Note: For this version, NNM requires that you have systemd and firewalld on your system.

  • Microsoft Windows 7, 8, 10, Server 2008, Server 2012, Server 2016, and Server 2019 64-bit

    Note: NNM requires Microsoft Visual C++ Redistributable for Visual Studio 2015, 2017 and 2019. You must download the specific package vc_redist.x64.exe from the Microsoft downloads site.

  • High Performance mode only available on:

  • RH6/CentOS6 (RH 6.0 through RH6.9) : 2.6.32-696

  • RH7/CentOS7 (RH 7.0 through RH7.4) : 3.10.0-693

  • RH7/CentOS7 (RH 7.5): 3.10.0-862
  • RH7/CentOS7 (RH 7.6): 3.10.0-957

  • RH7/CentOS7 (RH 7.7): 3.10.0-1062
  • RH7/CentOS7 (RH 7.8): 3.10.0-1127

  • RH7/CentOS7 (RH 7.9): 3.10-1160

  • RH8/CentOS8 (RH 8.0 through 8.5): 4.18.0-348

You can use ERSPAN to mirror traffic from one or more source ports on a virtual switch, physical switch, or router and send the traffic to a destination IP host running NNM. NNM supports the following ERSPAN virtual environments:

  • VMware ERSPAN (Transparent Ethernet Bridging)
  • Cisco ERSPAN (ERSPAN Type II)

Tip: Refer to the Configuring Virtual Switches for Use with NNM document for details on configuring your virtual environment.

High Performance Mode

To run NNM in High Performance mode, you must enable HugePages support. HugePages is a performance feature of the Linux kernel and is necessary for the large memory pool allocation used for packet buffers. If your Linux kernel does not have HugePages configured, NNM automatically configures HugePages per the appropriate settings. Otherwise, if your Linux kernel has defined HugePages, refer to the Configuring HugePages instructions in the Linux Command Line Operations section.