Deploy the Threat Defense Virtual on Nutanix

This chapter describes the procedures to deploy the threat defense virtual to a Nutanix environment.

Overview

The Cisco Secure Firewall Threat Defense Virtual (formerly Firepower Threat Defense Virtual) brings Cisco's Secure Firewall functionality to virtualized environments, enabling consistent security policies to follow workloads across your physical, virtual, and cloud environments, and between clouds.

This chapter describes how the threat defense virtual functions in the Nutanix environment with AHV hypervisor, including feature support, system requirements, guidelines, and limitations. This chapter also describes your options for managing the threat defense virtual.

It's important that you understand your management options before you begin your deployment. You can manage and monitor the threat defense virtual using the Secure Firewall Management Center. (formerly Firepower Management Center)

About Threat Defense Virtual Deployment On Nutanix

The Nutanix Enterprise Cloud Platform is a converged, scale-out compute and storage system that is built to host and store virtual machines. You can run multiple virtual machines running unmodified OS images of threat defense virtual using Nutanix AHV. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, and so forth.

End-to-End Procedure

The following flowchart illustrates the workflow for deploying Threat Defense Virtual on Nutanix Platform with Day-0 Configuration File.

Workspace

Steps

Linux Host

Deploy the Threat Defense Virtual on Nutanix: Download and save the threat defense virtual qcow2 file.

Linux Host

Deploy the Threat Defense Virtual on Nutanix: Upload the qcow2 file to the Nutanix environment.

Nutanix Prism Web Console

Deploy the Threat Defense Virtual on Nutanix: Prepare the Day-0 Configuration File (Text file > Enter the configuration details > Save as day0-config.txt.

Nutanix Prism Web Console

Deploy the Threat Defense Virtual on Nutanix: Deploy the Threat Defense Virtual on Nutanix.

Management Center

 Manage Threat Defense Virtual:

The following flowchart illustrates the workflow for deploying Threat Defense Virtual on Nutanix Platform without Day-0 Configuration File.

Workspace

Steps

Linux Host

Deploy the Threat Defense Virtual on Nutanix: Download and save the threat defense virtual qcow2 file.

Nutanix Prism Web Console

Deploy the Threat Defense Virtual on Nutanix: Upload the qcow2 file to the Nutanix environment.

Nutanix Prism Web Console

Deploy the Threat Defense Virtual on Nutanix: Deploy the Threat Defense Virtual on Nutanix.

Management Center

 Manage Threat Defense Virtual:

System Requirements

Versions

Manager Version Device Version
Management Center 7.0 Threat Defense 7.0

See the Cisco Secure Firewall Threat Defense Compatibility Guide for the most current information about hypervisor support for the threat defense virtual.

Threat Defense Virtual Memory, vCPU, and Disk Sizing

The specific hardware used for threat defense virtual deployments can vary, depending on the number of instances deployed and usage requirements. Each instance of the threat defense virtual requires a minimum resource allocation—amount of memory, number of CPUs, and disk space—on the server.

Settings

Value

Performance Tiers

Version 7.0 and later

The threat defense virtual supports performance-tiered licensing that provides different throughput levels and VPN connection limits based on deployment requirements.

  • FTDv5 4vCPU/8GB (100Mbps)

  • FTDv10 4vCPU/8GB (1Gbps)

  • FTDv20 4vCPU/8GB (3Gbps)

  • FTDv30 8vCPU/16GB (5Gbps)

  • FTDv50 12vCPU/24GB (10Gbps)

  • FTDv100 16vCPU/32GB (16Gbps)

See the "Licensing the System" chapter in theSecure Firewall Management Center Configuration for guidelines when licensing your threat defense virtual device.

Note

 

To change the vCPU/memory values, you must first power off the threat defense virtual device.

Storage

50 GB (Adjustable)

  • Supports virtio block devices

Note

The minimum number of network for the threat defense virtual are 4 data interfaces (management,diagnostic,outside and inside).

Threat Defense Virtual Licenses

Nutanix Components and Versions

Component Version
Nutanix Acropolis Operating System (AOS)

5.15.5 LTS and later

Nutanix Cluster Check (NCC)

4.0.0.1

Nutanix AHV

20201105.12 and later

Nutanix Prism Web Console

-

Guidelines and Limitations

Supported Features

  • Deployment Modes–Routed (Standalone), Routed (HA), Inline Tap, Inline, Passive, and Transparent

  • Licensing–Only BYOL

  • IPv6

  • Threat Defense Virtual native HA

  • Jumbo frames

  • VirtIO

Performance Optimizations

To achieve the best performance out of the threat defense virtual, you can make adjustments to the both the VM and the host. See Virtualization Tuning and Optimization on Nutanix for more information.

Receive Side Scaling—The threat defense virtual supports Receive Side Scaling (RSS), which is a technology utilized by network adapters to distribute network receive traffic to multiple processor cores. Supported on Version 7.0 and later. See Multiple RX Queues for Receive Side Scaling (RSS) for more information.

Snort

  • If you are observing abnormal behavior such as Snort taking a long time to shut down, or the VM being slow in general or when a certain process is executed, collect logs from the threat defense virtual and the VM host. Collection of overall CPU usage, memory, I/O usage, and read/write speed logs will help troubleshoot the issues.

  • High CPU and I/O usage is observed when Snort is shutting down. If a number of threat defense virtual instances have been created on a single host with insufficient memory and no dedicated CPU, Snort will take a long time to shut down which will result in the creation of Snort cores.

Unsupported Features

  • Threat Defense Virtual on Nutanix AHV does not support hot plug of interface. Do not try to Add/Remove interface when the threat defense virtual is powered on.

  • Nutanix AHV does not support SR-IOV or DPDK-OVS.


    Note

    Nutanix AHV supports in-guest DPDK using VirtIO. For more information, refer DPDK support on AHV.

General Guidelines

  • Requires two management interfaces and two data interfaces to boot. Supports a total of 11 interfaces.


    Note

    • The threat defense virtual default configuration puts the management interface, diagnostic interface, and inside interface on the same subnet.

    • When you are modifying the network interfaces, you must turn off the threat defense virtual device.

  • The default configuration for the threat defense virtual assumes that you put both the management (management and diagnostic) and inside interfaces on the same subnet, and the management address uses the inside address as its gateway to the Internet (going through the outside interface).

  • The threat defense virtual must be powered up on firstboot with at least four interfaces. Your system will not deploy without four interfaces.

  • The threat defense virtual supports a total of 11 interfaces—1 management interface, 1 diagnostic interface, and a maximum of 9 network interfaces for data traffic. The interface-to-network assignments must be ordered as follows:

    1. Management interface (required)

    2. Diagnostic interface (required)

    3. Outside interface (required)

    4. Inside interface (required)

    5. 5–11 Data interfaces (optional)


    Note

    The minimum number of network for the threat defense virtual are 4 data interfaces.

  • For the console access, terminal server is supported through telnet.

  • The following are the supported vCPU and memory parameters:

    CPUs

    Memory

    Threat Defense Virtual Platform Size

    4

    8 GB

    4vCPU/8GB (default)

    8

    16 GB

    8vCPU/16GB

    12

    24 GB

    12vCPU/24GB

    16

    32 GB

    16vCPU/32GB

  • See the following concordance of Network Adapter, Source Networks and Destination Networks for the threat defense virtual interfaces:

    Network Adapter

    Source Network

    Destination Network

    Function

    vnic0*

    Management0-0

    Management0/0

    Management

    vnic1

    Diagnostic

    Diagnostic

    Diagnostic

    vnic2*

    GigabitEthernet0-0

    GigabitEthernet0/0

    Outside

    vnic3*

    GigabitEthernet0-1

    GigabitEthernet0/1

    Inside

    *Attach to the same subnet.

Related Documentation

How to Manage Secure Firewall Threat Defense Virtual Device

You can manage your Secure Firewall Threat Defense Virtual device using the following:

Secure Firewall Management Center

If you are managing large numbers of devices, or if you want to use the more complex features and configurations that the threat defense allows, use the management center to configure your devices.

How to Deploy the Threat Defense Virtual on Nutanix

Step

Task

More Information

1

 Review the prerequisites. Prerequisites for Deployment on Nutanix

2

 Upload the threat defense virtual qcow2 file to the Nutanix environment. Upload the Threat Defense Virtual QCOW2 File to Nutanix

3

 (Optional) Prepare a Day 0 configuration file that contains the initial configuration data that gets applied at the time a virtual machine is deployed. Prepare the Day 0 Configuration File

4

Deploy the threat defense virtual to the Nutanix environment.

Deploy the Threat Defense Virtual

5

(Optional) If you did not use a Day 0 configuration file to set up the threat defense virtual, complete the setup by logging in to the CLI.

Complete the Threat Defense Virtual Setup

Upload the Threat Defense Virtual QCOW2 File to Nutanix

To deploy an threat defense virtual to the Nutanix environment, you must create an image from the threat defense virtual qcow2 disk file in the Prism Web Console.

Before you begin

Download the threat defense virtual qcow2 disk file from Cisco.com: https://software.cisco.com/download/navigator.html

Procedure

Step 1

Log in to the Nutanix Prism Web Console.

Step 2

Click the gear icon to open the Settings page.

Step 3

Click Image Configuration from the left pane.

Step 4

Click Upload Image.

Step 5

Create the image.

  1. Enter a name for the image.

  2. From the Image Type drop-down list, choose DISK.

  3. From the Storage Container drop-down list, choose the desired container.

  4. Specify the location of the threat defense virtual qcow2 disk file.

    You can either specify a URL (to import the file from a web server) or upload the file from your workstation.

  5. Click Save.

Step 6

Wait until the new image appears in the Image Configuration page.

Prepare the Day 0 Configuration File

You can prepare a Day 0 configuration file before you deploy the threat defense virtual. This file is a text file that contains the initial configuration data that gets applied at the time a virtual machine is deployed.

Keep in mind that:

  • If you deploy with a Day 0 configuration file, the process allows you to perform the entire initial setup for the threat defense virtual appliance.

  • If you deploy without a Day 0 configuration file, you must configure System-required settings after launch; see Complete the Threat Defense Virtual Setup for more information.

You can specify:

  • The End User License Agreement (EULA) acceptance.

  • A hostname for the system.

  • A new administrator password for the admin account.

  • The initial firewall mode; sets the initial firewall mode, either routed or transparent.

    If you plan to manage your deployment using the local device manager, you can only enter routed for the firewall mode. You cannot configure transparent firewall mode interfaces using the device manager.

  • The management mode; see How to Manage Secure Firewall Threat Defense Virtual Device.

    Enter information for the management center fields (FmcIp, FmcRegKey, and FmcNatId).

  • Network settings that allow the appliance to communicate on your management network.

Procedure

Step 1

Create a new text file using a text editor of your choice.

Step 2

Enter the configuration details in the text file as shown in the following sample:

Example:

#Firepower Threat Defense
{
    "EULA": "accept",
    "Hostname": "ftdv-production",
    "AdminPassword": "Admin123",
    "FirewallMode": "routed",
    "DNS1": "1.1.1.1",
    "DNS2": "1.1.1.2",
    "DNS3": "",
    "IPv4Mode": "manual",
    "IPv4Addr": "10.12.129.44",
    "IPv4Mask": "255.255.0.0",
    "IPv4Gw": "10.12.0.1",
    "IPv6Mode": "disabled",
    "IPv6Addr": "",
    "IPv6Mask": "",
    "IPv6Gw": "", 
    "FmcIp": "",
    "FmcRegKey": "",
    "FmcNatId": "",
    "ManageLocally":"No"
}

Note

 

The content of the Day 0 configuration file must be in JSON format. You must validate the text using a JSON validator tool.

Step 3

Save the file as “day0-config.txt.”

Step 4

Repeat Step 1–3 to create unique default configuration files for each threat defense virtual that you want to deploy.

Deploy the Threat Defense Virtual

Before you begin

Ensure that the image of the threat defense virtual that you plan to deploy is appearing on the Image Configuration page.

Procedure

Step 1

Log in to the Nutanix Prism Web Console.

Step 2

From the main menu bar, click the view drop-down list, and choose VM.

Step 3

On the VM Dashboard, click Create VM.

Step 4

Do the following:

  1. Enter a name for the threat defense virtual instance.

  2. Optionally enter a description for the threat defense virtual instance.

  3. Select the timezone that you want the threat defense virtual instance to use.

Step 5

Enter the compute details.

  1. Enter the number of virtual CPUs to allocate to the threat defense virtual instance.

  2. Enter the number of cores that must be assigned to each virtual CPU.

  3. Enter the amount of memory (in GB) to allocate to the threat defense virtual instance.

Step 6

Attach a disk to the threat defense virtual instance.

  1. Under Disks, Click Add New Disk.

  2. From the Type drop-down list, choose DISK.

  3. From the Operation drop-down list, choose Clone from Image Service.

  4. From the Bus Type drop-down list, choose PCI or SCSI.

  5. From the Image drop-down list, choose the image that you want to use.

  6. Click Add.

Step 7

Configure at least four virtual network interfaces.

Under Network Adapters (NIC), click Add New NIC, select a network, and click Add.

Repeat this process to add more network interfaces.

The threat defense virtual on Nutanix supports a total of 11 interfaces—One management interface, one diagnostic interface, and a maximum of nine network interfaces for data traffic. The interface-to-network assignments must be ordered as follows:

  • vnic0—Management interface (required)

  • vnic1—Diagnostic interface (required)

  • vnic2—Outside interface (required)

  • vnic3—Inside interface (required)

  • vnic4-10—Data interfaces (optional)

Step 8

Configure affinity policy for the threat defense virtual.

Under VM Host Affinity , click Set Affinity, select the hosts, and click Save.

Select more than one host to ensure that the threat defense virtual can be run even if there is a node failure.

Step 9

If you have prepared a Day 0 configuration file, do the following:

  1. Select Custom Script.

  2. Click Upload A File, and choose the Day 0 configuration file (day0-config.txt).

Note

 

All the other custom script options are not supported in this release.

Step 10

Click Save to deploy the threat defense virtual. The threat defense virtual instance appears in the VM table view.

Step 11

In the VM table view, select the newly created threat defense virtual instance, and click Power On.

What to do next

Complete the Threat Defense Virtual Setup

Because the threat defense virtual appliances do not have web interfaces, you must set up a virtual device using the CLI if you deployed without a Day 0 configuration file.

Procedure

Step 1

Open a console to the threat defense virtual.

Step 2

At the firepower login prompt, log in with the default credentials of username admin and the password Admin123.

Step 3

When the threat defense virtual system boots, a setup wizard prompts you for the following information that is required to configure the system:

  • Accept EULA

  • New admin password

  • IPv4 or IPv6 configuration

  • IPv4 or IPv6 DHCP settings

  • Management port IPv4 address and subnet mask, or IPv6 address and prefix

  • System name

  • Default gateway

  • DNS setup

  • HTTP proxy

  • Management mode

Step 4

Review the Setup wizard settings. Defaults or previously entered values appear in brackets. To accept previously entered values, press Enter.

Step 5

Complete the system configuration as prompted.

Step 6

Verify that the setup was successful when the console returns to the # prompt.

Step 7

Close the CLI.

What to do next

Your next steps depend on what management mode you chose.

See How to Manage Secure Firewall Threat Defense Virtual Device for an overview of how to choose your management option.