FCP_FGT_AD-7.4 Questions and Answers

Both interfaces must have directly connected routes on the routing table

In NAT mode, each interface must have a corresponding entry in the routing table, typically as a directly connected route, to route traffic between them effectively.

Both interfaces must have IP addresses assigned

In NAT mode, each interface must have an IP address to participate in routing and NAT operations. The IP addresses allow the FortiGate to forward traffic between different network segments.

The current setting for the root FortiGate (Local-FortiGate) is fabric-object-unification local, which means that new address objects are not shared across the security fabric. Changing this setting to fabric-object-unification default will allow address objects to be synchronized and shared with downstream devices like the ISFW.

To consolidate the two separate firewall policies for Sales and Engineering departments accessing the same web server, you can create an Interface Group that includes both port1 (Sales) and port2 (Engineering). Once the Interface Group is created, you can use this group as a single incoming interface in a single firewall policy. This approach reduces the number of policies, making management more efficient.

References:

FortiOS 7.4.1 Administration Guide: Firewall Policy Configuration

By selecting the "Include in every user group" option in the RADIUS configuration, FortiGate automatically includes this RADIUS server as an authentication source for all user groups. This means any user group configured on the FortiGate will authenticate using this RADIUS server, allowing users to authenticate against the server for any group they belong to.

In FortiGate HA (High Availability) configuration, checksums of device configurations are compared to ensure they are synchronized and identical across the cluster. Incremental synchronization can only happen from changes made on the primary device to ensure consistency and integrity across the cluster members. Changes made on non-primary devices do not initiate synchronization.

References:

FortiOS 7.4.1 Administration Guide: HA Configuration Synchronization

To deny access to the web server for Remote-User2 while allowing Remote-User1 to access the same web server, two configuration changes can be made:

Enable match-vip in the Deny policy:By enabling the match-vip option in the Deny policy, the FortiGate will check for virtual IP (VIP) objects during policy matching. This setting allows the firewall policy to correctly identify and block traffic directed to a specific mapped IP address, such as the web server, when using a VIP configuration.

Set the Destination address as Webserver in the Deny policy:Setting the Destination address to "Webserver" in the Deny policy ensures that the policy specifically targets traffic attempting to reach the web server. This configuration helps to precisely control which traffic should be blocked, focusing the Deny policy on the intended destination.

References:

FortiOS 7.4.1 Administration Guide: Deny matching with a policy with a virtual IP applied​

FortiOS 7.4.1 Administration Guide: Configuring Policies with VIPs

The IPS sensor configuration shows that:

The Microsoft.Windows.iSCSI.Target.DoS signature is set to "Monitor" with packet logging enabled, meaning that while traffic matching this signature will be allowed, it will also be logged for further analysis.

The generic Windows filter is set to "Block," meaning that all other attacks matching this filter will be blocked. However, the sensor will not reset connections or log packets unless specified.

Therefore, the sensor will allow attackers matching the specific DoS signature while blocking other attacks against Windows.

References:

FortiOS 7.4.1 Administration Guide: IPS Configuration

When SD-WAN is enabled on FortiGate, the load balancing algorithm for Equal-Cost Multi-Path (ECMP) is configured using the load-balance-mode parameter under SD-WAN settings. However, if SD-WAN is disabled, the ECMP load balancing algorithm can be configured under config system settings. This flexibility allows FortiGate to control traffic routing behavior based on the network configuration and requirements.

References:

FortiOS 7.4.1 Administration Guide: ECMP Configuration

The application control engine on a FortiGate next-generation firewall is responsible for identifying and managing application traffic. It allows administrators to set policies based on application types, regardless of the port or protocol being used.

In this scenario, the FortiGate device is using a Virtual IP (VIP) to map the public IP address (203.0.113.2) to the internal IP address of the web server (172.16.1.10). The fact that the administrator does not see any sniffer output for incoming traffic suggests that the FortiGate is not responding to ARP requests for the public IP address (203.0.113.2).

Enabling arp-reply in the VIP configuration allows the FortiGate to respond to ARP requests for the public IP, thereby allowing traffic to reach the FortiGate, which will then forward it to the web server based on the VIP mapping.

To retrieve AD user group information in agentless polling mode, the administrator must add an LDAP server to the FortiGate device​.

For a high-latency internet connection, the SSL VPN setting that should be adjusted is:

C. SSL VPN dtls-hello-timeout: This setting determines how long the FortiGate will wait for a DTLS hello message from the client. For high-latency connections, increasing this timeout will prevent SSL VPN negotiation failures caused by delays in receiving the DTLS hello message.

The other options are not suitable:

A. SSL VPN idle-timeout: This setting controls the idle time allowed before a session is terminated, which is not relevant to the initial connection establishment.

B. SSL VPN login-timeout: This setting controls the maximum time allowed for a user to log in, but does not affect connection negotiation.

D. SSL VPN session-ttl: This setting controls the total time-to-live for an SSL VPN session but does not directly address issues caused by high latency.

References

FortiOS 7.4.1 Administration Guide - SSL VPN Configuration, page 1415.

For traffic that does not match any of the defined SD-WAN rules, the default implicit SD-WAN rule is applied. By default, the FortiGate uses a "source-destination IP-based" algorithm, which means all traffic from a specific source IP to a specific destination IP is sent through the same interface. This ensures that a consistent path is used for traffic between the same source and destination IP addresses. Options B, C, and D do not apply because the default algorithm does not prioritize by latency, session count, or source IP alone.

References:

FortiOS 7.4.1 Administration Guide: SD-WAN Load Balancing Algorithms​

Option 5 in the IPS diagnostic command toggles the bypass status. If this option is used and results in a decrease in CPU usage, it means the IPS engine is no longer processing traffic, effectively blocking or bypassing the traffic. In this case, IPS is not inspecting the traffic anymore, leading to a decrease in CPU usage, which indicates that the traffic might be blocked instead of inspected.

For SSL VPN to function correctly between two FortiGate devices, the following settings are required:

B. The server FortiGate requires a CA certificate to verify the client FortiGate certificate: The server FortiGate must have a Certificate Authority (CA) certificate installed to authenticate and verify the certificate presented by the client FortiGate device.

C. The client FortiGate requires a client certificate signed by the CA on the server FortiGate: The client FortiGate must have a client certificate that is signed by the same CA that the server FortiGate uses for verification. This ensures a secure SSL VPN connection between the two devices.

The other options are not directly necessary for establishing SSL VPN:

A. The client FortiGate requires the SSL VPN tunnel interface type to connect SSL VPN: This is incorrect as SSL VPN does not require a specific tunnel interface type; it typically uses an SSL VPN client profile.

D. The client FortiGate requires a manually added route to remote subnets: While routing may be necessary, it is not specifically required for the SSL VPN functionality between two FortiGates.

References

FortiOS 7.4.1 Administration Guide - Configuring SSL VPN, page 1203.

FortiOS 7.4.1 Administration Guide - SSL VPN Authentication, page 1210.

The SSL VPN http-request-header-timeout timer is used to mitigate denial of service (DoS) attacks by limiting the amount of time the FortiGate waits for the client to send an HTTP request header after a connection is established. This helps reduce the attack surface by preventing potential attacks that exploit prolonged connection times without fully completing requests.

The debug output indicates that FortiGate connected to one server (173.243.141.16) to retrieve contract information as it shows four FortiGuard requests without any packet loss, which confirms the connection to the server. Additionally, the default FortiGuard communication settings are being used, as indicated by the use of the HTTPS protocol on port 443, which is the default setting for FortiGuard connections.

References:

FortiOS 7.4.1 Administration Guide: FortiGuard Connection Settings

In NetAPI polling mode, the FSSO (Fortinet Single Sign-On) collector agent uses the NetAPI (Windows API) to query the Domain Controllers (DCs) for user login sessions. This method allows the collector agent to retrieve information about active user sessions without directly scanning event logs.

When full SSL inspection is enabled, FortiGate intercepts HTTPS traffic, decrypts it for inspection, and re-encrypts it using its own SSL certificate before forwarding it to the browser. If the browser does not trust the SSL certificate being used by FortiGate for re-encryption, it will display certificate warning errors. To resolve this, the certificate used by FortiGate for SSL inspection must be installed and trusted in the browser's certificate store.

The source address remains 10.200.3.1 because FortiGate does not modify the source address by default unless NAT is applied (which is disabled in the policy).

The destination address is translated to 10.0.1.10 by the VIP (Virtual IP) object, as this is the internal server address mapped to the external IP 10.200.1.10.

The destination port is translated from 8080 to 80 as per the port forwarding rule configured in the VIP object.