Before beginning installation, please be sure to have a host system with the following resources available:
A system with the ability to run a VM image and at least 4 GB of assigned memory.
The needed assigned memory for a VM image will vary depending on the Tenable applications enabled. Please refer to the installation documentation for the individual applications for memory recommendations and adjust the VM memory setting as appropriate.
At least one IP address for the appliance. By default, the VM appliance will obtain an IP address from a DHCP server, if one is available. Otherwise, a fixed address, netmask, and optional gateway may be assigned during the installation process. If there is a DHCP server available, but a static IP address is to be assigned, this may be set during the configuration process. Using multiple addresses allows for multi-homing the appliance on different network segments to cut down on the network load.
As with any security management device, a static IP address (assigned manually or via DHCP) is recommended for use on the appliance network interfaces.
Along with the IP address, the following values must be configured for the Tenable VM Appliance to be network accessible:
It is necessary to have a hostname available to assign to the appliance during installation to ensure the SSL certificate is generated properly. The appliance ships with the default hostname of “
tnsappliance”. Whenever the hostname is changed, a new server certificate will be generated and the device will require a reboot.