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Interfaces

Network interfaces can be configured from the “Networking” page.

By default, the Tenable VM Appliance obtains an IPv4 address and netmask for Interface 0 from a DHCP server. This can be changed to include IPv6 or static address.

The Tenable Hardware Appliance ships with a static IPv4 address. This can be changed to a DHCP address by selecting Version 4 from the Use DHCP drop-down menu.

If the IP address is changed on the listening web interface, you will need to adjust the IP address in the URL of your browser to connect to the appliance again.

In the configuration area for each interface, the first line displays the MAC address of the NIC. Below the MAC Address box is a section called Interface In Use By, which indicates the Appliance services are utilizing the interface. The Negotiated Speed displays the maximum speed at which the NIC is connected to the network.

The Status drop-down determines if the interface is disabled, configured only for IPv4, or configured for both IPv4 and IPv6. The Use DHCP drop-down offers options to prevent the interface from using DHCP. Only use DHCP to configure IPv4, IPv6, or both IPv4 and IPv6. The Accept Nameservers from DHCP drop-down offers the options - No, IPv4, IPv6, and both IPv4 and IPv6. The locally configured Domain Name Servers are not used when the “No” option is selected.

The IPv6 protocol offers an auto configuration option. This is different than DHCP. The Accept IPv6 Autoconfiguration option offers the ability to enable or disable this feature on the interface.

For interfaces other than the one being used to access the management interface, the Web Interface Accessible option can be configured as desired by adjusting the “Yes/No” toggle. The toggle option is disabled on the interface that is used to manage the appliance.

Current IP Addresses lists the current IPv4 and IPv6 addresses configured for the interface. Configured IP Addresses is a text entry field to configure static IPv4 and/or IPv6 addresses. Addresses may be entered as the IP Address/Prefix, IP Address/CIDR, or IP Address/Netmask.

If static routes are required to facilitate networking needs, enter in one or more static routes in the “Static Routes” box. When entered, the static route is applied to the interface on which it is entered.

Input as: <HOST/NETWORK> (via <GATEWAY>) (dev eth#) (metric #)

For example: 10.200.200.0 via 10.100.201.1

For example: 2001:db8::/32 via 2001:db8::1

When using multiple network interfaces, there is not a provided method to configure IP forwarding or bridging between interfaces. The Appliance and its applications will use the best interface for network communications based on the system's routing table configuration.

When finished configuring additional interfaces, click Configure Interfaces to save and restart networking services with the new configuration. Click Restart Interfaces to restart networking with the current configuration.

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