NSE7_PBC-7.2 Fortinet NSE 7 Public Cloud Security 7.2 (FCSS) Questions and Answers

To get Terraform ready using Microsoft Azure Cloud Shell, you need to perform the following steps:

Set up a storage account in Azure. This is required to store the Terraform state file in a blob container, which enables collaboration and persistence of the infrastructure configuration1.

Use the wget (terraform_version) command to upload Terraform. This command downloads the latest version of Terraform from the official website and saves it as a zip file in the current directory2.

Move the Terraform file to the bin directory. This step extracts the Terraform executable from the zip file and moves it to the bin directory, which is part of the PATH environment variable. This allows you to run Terraform commands from any directory in Cloud Shell2.

The other options are incorrect because:

You do not need to use the -O command to download Terraform. This command is used to specify a different output file name for the downloaded file, but it is not necessary for this task3.

You do not need to subscribe to Terraform in Azure. Terraform is an open-source tool that can be used with any cloud provider, and there is no subscription or registration required to use it with Azure4. References:

Updating the route table and adding an IAM policy

Configure Terraform in Azure Cloud Shell with Bash

wget(1) - Linux man page

Terraform by HashiCorp

In an HA active-active load balance configuration with FortiGate VMs, especially in Microsoft Azure where FGSP (FortiGate Session Life Support Protocol) is used for session synchronization, the correct configuration for the peerip is:

D. The opposite FortiGate port 2 IP address.

HA Synchronization Requirements: FGSP requires direct communication between the FortiGates to synchronize the session table. This synchronization typically occurs over a dedicated HA link that connects the HA pair.

Asymmetric Traffic Considerations: FGSP allows asymmetric traffic to rejoin the correct session by synchronizing session information, including NAT and TCP sequence tracking between the FortiGate units in a cluster.

Configuration Specifics: For port 2, which is facing the internal load balancer, the peerip should be set to the corresponding port 2 IP address of the opposite FortiGate. This allows the internal interfaces to communicate directly with each other for session synchronization purposes, which is crucial in an active-active deployment to ensure sessions persist during failover scenarios.

References: The choice of using port 2's IP address for FGSP is supported by the Fortinet documentation, which explains how FortiGates should be configured for HA, especially in cloud environments where traditional HA links may not be available.

A. The peer GRE address is the FortiGate external interface IP address. This is the IP address of the FortiGate interface that is connected to the transit gateway attachment subnet1. This IP address is used to establish the GRE tunnel between the FortiGate and the transit gateway2. B. The Transit Gateway GRE address is auto-generated. This is the IP address of the transit gateway that is used to establish the GRE tunnel with the FortiGate2. This IP address is automatically assigned by AWS from the Transit Gateway CIDR range that you specify when you create the Connect attachment3.

The other options are incorrect because:

The BGP inside CIDR blocks cannot be any CIDR block with /29. They must be a /29 CIDR block from the 169.254.0.0/16 range for IPv4, or a /125 CIDR block from the fd00::/8 range for IPv64. These are the inside IP addresses that are used for BGP peering over the GRE tunnel4.

The Peer GRE address is not the FortiGate internal interface IP address. The internal interface IP address is used to route traffic from the FortiGate to the VPC subnet where the third-party appliance (such as SD-WAN) is located1. The Peer GRE address is used to route traffic from the FortiGate to the transit gateway over the GRE tunnel2.

The correct answer is A and C. A transport attachment and a connect attachment are necessary to connect a transit gateway to an existing VPC with BGP.

According to the AWS documentation for Transit Gateway, a transit gateway is a network transit hub that connects VPCs and on-premises networks. To connect a transit gateway to an existing VPC with BGP, you need to do the following steps:

Create a transport attachment. A transport attachment is a resource that connects a VPC or VPN to a transit gateway. You can specify the BGP options for the transport attachment, such as the autonomous system number (ASN) and the BGP peer IP address.

Create a connect attachment. A connect attachment is a resource that enables you to use your own appliance to provide network services for traffic that flows through the transit gateway. You can use a connect attachment to route traffic between the transport attachment and your appliance using GRE tunnels and BGP.

The other options are incorrect because:

A BGP attachment is not a valid type of attachment for a transit gateway. BGP is a protocol that enables dynamic routing between the transit gateway and the VPC or VPN.

A GRE attachment is not a valid type of attachment for a transit gateway. GRE is a protocol that encapsulates packets for tunneling purposes. GRE tunnels are established between the connect attachment and your appliance.

[Transit Gateways - Amazon Virtual Private Cloud] : [Transit Gateway Connect - Amazon Virtual Private Cloud]

To deploy a FortiGate HA solution in AWS using Terraform, you need to create an AWS IAM user with permissions to access the AWS resources and services required by the FortiGate-VM. You also need to use CloudShell to install Terraform, which is a tool for building, changing, and versioning infrastructure as code.

References:

Deploying FortiGate-VM using Terraform | AWS Administration Guide

Setting up IAM roles | AWS Administration Guide

Launching the instance using roles and user data | AWS Administration Guide

Terraform by HashiCorp

B. FortiGate A and FortiGate B are two independent devices. This means that they are not part of a cluster or a high availability group, and they do not share the same configuration or state information. They are configured as standalone FortiGates with standalone configuration synchronization enabled1. This feature allows them to synchronize most of their configuration settings with each other, except for some settings that identify the FortiGate to the network, such as the hostname1. D. It does not synchronize the FortiGate hostname. This is one of the settings that are excluded from the standalone configuration synchronization, as mentioned above. The hostname is a unique identifier for each FortiGate device, and it should not be changed by the synchronization process1.

The other options are incorrect because:

FortiGate-VM instances are not scaled out automatically according to predefined workload levels. This is a feature of the auto scaling solution for FortiGate-VM on Azure, which requires a different deployment and configuration than the one shown in the exhibit2. The exhibit shows a static deployment of two FortiGate-VM instances behind an Azure load balancer, which does not support auto scaling.

By default, FortiGate does not use FGCP. FGCP stands for FortiGate Clustering Protocol, which is used to synchronize configuration and state information between FortiGate devices in a cluster or a high availability group3. However, the exhibit shows that the FortiGates are not in a cluster or a high availability group, and they use standalone configuration synchronization instead of FGCP.

This is because the Linux1 EC2 instance is not accessible directly from the internet using its public IP address in AWS.

An internet gateway is a horizontally scaled, redundant, and highly available VPC component that allows communication between instances in your VPC and the internet. Without an internet gateway, the Linux1 EC2 instance cannot receive or send traffic to or from the internet, even if it has a public IP address assigned to it.

To fix this issue, you need to attach an internet gateway to the Spoke VPC A and configure a route table that directs internet-bound traffic to the internet gateway. You also need to ensure that the Linux1 EC2 instance has a security group that allows inbound and outbound traffic on the desired ports.

[Internet Gateways - Amazon Virtual Private Cloud] : [Attach an Internet Gateway to Your VPC - Amazon Virtual Private Cloud] : [Security Groups for Your VPC - Amazon Virtual Private Cloud]

When deploying resources in multiple places and regions in the public cloud using Terraform, the most efficient way is:

A. Use multiple terraform.tfvars files with a variables.tf file.

Terraform.tfvars File: This file is used to assign values to variables defined in your Terraform configuration. By having multiple .tfvars files, you can define different sets of values for different deployments, such as for different regions or environments, without changing the main configuration.

Variables.tf File: This file contains the definition of variables that will be used within your Terraform configuration. It works in conjunction with terraform.tfvars files, allowing you to parameterize your configuration so that you can deploy the same template in multiple environments with different variables.

References: This method is outlined in Terraform's official documentation and is a best practice for reusing code for different environments in infrastructure as code (IaC) deployments.

A VPC attachment is the type of attachment that allows you to connect a VPC to a TGW and advertise routes through BGP. A VPC attachment creates a VPN connection between the VPC and the TGW, and enables dynamic routing with BGP. A connect attachment is used to connect a VPN or Direct Connect gateway to a TGW. A route attachment is not a valid type of attachment for TGW. A GRE attachment is used to connect a FortiGate device to a TGW using GRE tunnels. References:

Creating the TGW and related resources

Configuring TGW route tables

FortiGate Public Cloud 7.2.0 - Fortinet Documentation

Updating the route table and adding an IAM policy

To configure a FortiGate VM to add to FortiCNP, you need to perform three steps on FortiGate:

Enable send logs in FortiGate to allow FortiCNP to receive the IPS logs from FortiGate.

Create an SSL/SSH inspection profile on FortiGate to inspect the encrypted traffic and apply IPS protection.

Create an IPS sensor and a firewall policy on FortiGate to enable IPS detection and prevention for the traffic.

References:

FortiCNP 22.4.a Administration Guide, page 22-24

FortiGate IPS Administration Guide, page 9-10

A. Use the terraform destroy command. This command is used to remove all the resources that were created using the Terraform configuration1. It is the opposite of the terraform apply command, which is used to create resources. The terraform destroy command will first show a plan of what resources will be destroyed, and then ask for confirmation before proceeding. The command will also update the state file to reflect the changes. D. The administrator must manually delete the Linux server. This is because the Linux server was not deployed using Terraform, but using AWS Marketplace2. Therefore, Terraform does not have any information about the Linux server in its state file, and cannot manage or destroy it. The administrator will have to use the AWS console or CLI to delete the Linux server manually.

The other options are incorrect because:

There is no terraform validate command. The correct command is terraform plan, which is used to show a plan of what changes will be made by applying the configuration3. However, this command does not delete any resources, it only shows what will happen if terraform apply or terraform destroy is run.

There is no terraform destroy all command. The correct command is terraform destroy, which will destroy all the resources in the current configuration by default1. There is no need to add an all argument to the command.

The reason the administrator cannot access the EC2 instance could be:

D. The directory location of the .pem file is incorrect.

SSH Key Location: When initiating an SSH connection to an AWS EC2 instance, you must specify the private key file (.pem file) location that corresponds to the public key used when the instance was launched. The error "Warning: Identity file Staging-key.pem not accessible: No such file or directory" indicates that the SSH client cannot find the .pem file at the specified location.

Correct File Path: The administrator needs to ensure that the path to the Staging-key.pem file is correctly specified when running the SSH command. If the file is not in the current directory from which the command is executed, the full or relative path to the file must be provided.

References: This behavior is in line with standard SSH connection practices and AWS guidelines for accessing EC2 instances. It is a common issue that occurs when the private key file is not located in the directory from which the SSH command is being executed or the path provided is incorrect.

Immutable infrastructure is a DevOps approach that emphasizes the creation of disposable resources instead of modifying existing ones1. This approach helps to achieve stability, consistency, and predictability in IT operations by reducing the risk of configuration drift and eliminating stateful components1.

One way to implement immutable infrastructure is to use a blue-green deployment strategy, which runs two live environments for configuration changes2. The blue environment is the current production environment, while the green environment is the new version of the application or service. When the green environment is ready, the traffic is switched from blue to green, and the blue environment is destroyed or kept as a backup2. This way, there is no need to update or patch the existing infrastructure, but rather replace it with a new one.

References:

1: Immutable Infrastructure, Architecture, and its benefits

2: Introduction to Immutable Infrastructure – BMC Software | Blogs

The correct answer is C and D. Use a transit VPC with hub and spoke topology to create multiple VPN connections to the on-premises data center. Use the transit gateway attachment with VPN option to create multiple VPN connections to the on-premises data center.

According to the Fortinet documentation for Public Cloud Security, a transit VPC is a VPC that serves as a global network transit center for connecting multiple VPCs, remote networks, and virtual private networks (VPNs). A transit VPC can use a hub and spoke topology to create multiple VPN connections to the on-premises data center, using the FortiGate VM as a virtual appliance that provides network security and threat prevention. A transit VPC can also leverage Equal-Cost Multi-Path (ECMP) routing to achieve higher bandwidth and load balancing across multiple VPN tunnels1.

A transit gateway is a network transit hub that connects VPCs and on-premises networks. A transit gateway attachment is a resource that connects a VPC or VPN to a transit gateway. You can use the transit gateway attachment with VPN option to create multiple VPN connections to the on-premises data center, using the FortiGate VM as a virtual appliance that provides network security and threat prevention. A transit gateway attachment with VPN option can also leverage ECMP routing to achieve higher bandwidth and load balancing across multiple VPN tunnels2.

The other options are incorrect because:

Using ECMP and VPN to achieve higher bandwidth is not a complete solution, as it does not specify how to replace the existing VPC peering topology or how to connect the AWS VPCs to the on-premises data center.

Using transit VPC to build multiple VPC connections to the on-premises data center is not a correct solution, as it does not specify how to use a hub and spoke topology or how to leverage ECMP routing for higher bandwidth.

1: Fortinet Documentation Library - Transit VPC on AWS 2: Fortinet Documentation Library - Deploying FortiGate VMs on AWS