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Virtual MAC Address and Failover

- The new primary broadcasts Gratuitous ARP packets to notify the network that each virtual MAC is now reachable through a different switch port.

- Some high-end switches might not clear their MAC table correctly after a failover - Solution: Force former primary to shut down all its interfaces for one second when the failover happens (excluding heartbeat and reserved management interfaces):

#Config system ha

set link-failed-signal enable

end

- This simulates a link failure that clears the related entries from MAC table of the switches.

To use the VPN interfaces in a policy, you need to install the VPN community and gateway configuration on the FortiGate devices first. This will create the VPN interfaces on the FortiGate and sync them with FortiManager. References:

• Creating IPsec VPN communities
• VPN | FortiGate / FortiOS 7.2.0

In the event of an outage at 10.0.1.240, the FortiGate will choose the next server in the sequence for web filter rating requests, which is 10.0.1.244 according to the configuration shown in the exhibit. This is because the server list is ordered by priority, and the server with the lowest priority number is chosen first. If that server is unavailable, the next server with the next lowest priority number is chosen, and so on. The public FortiGuard servers are only used if the include-default-servers option is enabled and all the custom servers are unavailable. References := Fortinet Enterprise Firewall Study Guide for FortiOS 7.2, page 132.

When deployed as a local FortiGuard Distribution Server (FDS), FortiManager functions in several capacities. It can act as an update server, a rating server, or both, providing firmware updates and FortiGuard database updates. Additionally, it plays a crucial role in VM license validation services, ensuring that the connected FortiGate devices are operating with valid licenses. However, it does not support rating requests from non-FortiGate devices nor cache firmware updates for unmanaged devices.

Fortinet FortiOS Handbook: FortiManager as a Local FDS Configuration

The neighbor-group command in FortiOS allows for the application of common settings to a group of neighbors in OSPF, and can also be used to simplify configuration by applyingcommon settings to both IBGP and EBGP neighbors. This grouping functionality is a part of the FortiOS CLI and is documented in the Fortinet CLI reference.

The reason for the command failure when trying to set the protocol to UDP in theconfig system fortiguardis likely that UDP is not a protocol option in this context. The command syntax might be incorrect or the option to set a protocol for FortiGuard updates might not exist in this manner. So the correct answer is D. udp is not a protocol option.

The inability to modify the Finance address object while being able to modify the Engineering address object suggests that the Finance object is being managed by a higher authority in the Security Fabric, likely the root FortiGate. When a FortiGate is part of a Security Fabric, address objects and other configurations may be managed centrally. This aligns with the Fortinet FortiGate documentation on Security Fabric and central management of address objects.

• Option B is correct because each FortiGate in the Security Fabric can send logs to FortiAnalyzer for centralized logging and analysis12. This allows you to monitor and manage the entire Security Fabric from a single console and view aggregated reports and dashboards.
• Option A is incorrect because the root FortiGate is not the only device that can send logs to FortiAnalyzer. The root FortiGate is the device that initiates the Security Fabric and acts as the central point of contact for other FortiGate devices3. However, it does not have to be the only log source for FortiAnalyzer.
• Option C is incorrect because the FortiGate devices performing NAT or UTM are not the only devices that can send logs to FortiAnalyzer. These devices can perform additional security functions on the traffic that passes through them, such as firewall, antivirus, web filtering, etc4. However, they are not the only devices that generate logs in the Security Fabric.
• Option D is incorrect because the last FortiGate that handled a session in the Security Fabric is not the only device that can send logs to FortiAnalyzer. The last FortiGate is the device that terminates the session and applies the final security policy5. However, it does not have to be the only device that reports the session information to FortiAnalyzer. References: =
• 1: Security Fabric - Fortinet Documentation1
• 2: FortiAnalyzer Demo6
• 3: Security Fabric topology
• 4: Security Fabric UTM features
• 5: Security Fabric session handling

C. The hub adds routes based on IKE negotiations: This is part of the ADVPN functionality where the hub learns about the networks behind the spokes and can add routes dynamically based on the IKE negotiations with the spokes.

D. You must configure phase 2 quick mode selectors to 0.0.0.0 0.0.0.0: This wildcard setting in the phase 2 selectors allows any-to-any tunnel establishment, which is necessary for the dynamic creation of spoke-to-spoke tunnels.

These configurations are outlined in Fortinet's documentation for setting up ADVPN, where the hub's role in route control and the use of wildcard selectors for phase 2 are emphasized to enable dynamic tunneling between spokes.

The configuration line “set dpd on-idle” indicates that dead peer detection (DPD) is set to trigger only when the tunnel is idle, not actively disabled1. References: FortiGate IPSec VPN User Guide - Fortinet Document Library

From the given VPN configuration, dead peer detection (DPD) is set to 'on-idle', indicating that DPD is enabled and will be used to detect if the other end of the VPN tunnel is still alive when no traffic is detected. Hence, option C is incorrect. The configuration shows the tunnel set to type 'dynamic', which does not create separate virtual interfaces for each dial-up client (A), and it is not specified that dynamic routing will be used (B). Since this is a phase 1 configuration snippet, the routing table aspect (D) cannot be concluded from this alone.

Option D is the correct answer because it specifically blocks access to the website using TCP protocol and HTTP service, which are commonly used for web browsing. The other options either use the wrong protocol (UDP), the wrong service (DNS or SSL), or the wrong pattern (“eicar” instead of References := Configuring custom signatures | FortiGate / FortiOS 7.4.0 - Fortinet Document Library, section “Signature to block access to example.com”.

For a custom signature to be valid and savable on a FortiGate device, it must include certain mandatory fields. Severity is used to specify the level of threat that the signature represents, and attack_id is a unique identifier for the signature. Without these, the signature would not be complete and could not be correctly utilized by the FortiGate's Intrusion Prevention System (IPS).

BFD (Bidirectional Forwarding Detection) is a protocol that provides fast failure detection for BGP by sending periodic messages to verify the connectivity between two peers1. BFD can be enabled on both connected FortiGate devices by using the command set bfd enable under the BGP configuration2. References: = Technical Tip : FortiGate BFD implementation and examples …, Configure BGP | FortiGate / FortiOS 7.0.2 - Fortinet Documentation

In IKE version 2, not all packets are fragmentable. Only certain messages within the IKE negotiation process can be fragmented. Additionally, there is a limit to the number of fragments that IKE version 2 can handle, which is 128. This is specified in the Fortinet documentation and ensures that the IKE negotiation process can proceed even in networks that have issues with large packets. The reassembly timeout and the layer at which fragmentation occurs are not specified in this context within Fortinet documentation.

• Option A is correct because to allow SSH, you need to specify SSH in the Service field of the policy configuration. This is because the Service field determines which types of traffic are allowed by the policy1. By default, the Service field is set to App Default, which means that the policy will use the default ports defined by the applications. However, SSH is not one of the default applications, so you need to specify it manually or create a custom service for it2.
• Option B is incorrect because configuring port 22 in the Protocol Options field is not enough to allow SSH. The Protocol Options field allows you to customize the protocol inspection and anomaly protection settings for the policy3. However, this field does not override the Service field, which still needs to match the traffic type.
• Option C is incorrect because including SSH in the Application field is not enough to allow SSH. The Application field allows you to filter the traffic based on the application signatures and categories4. However, this field does not override the Service field, which still needs to match the traffic type.
• Option D is incorrect because selecting an application control profile corresponding to SSH in the Security Profiles section is not enough to allow SSH. The Security Profiles section allows you to apply various security features to the traffic, such as antivirus, web filtering, IPS, etc. However, this section does not override the Service field, which still needs to match the traffic type. References: =
• 1: Firewall policies
• 2: Services
• 3: Protocol options profiles
• 4: Application control