Free Fortinet FCSS_EFW_AD-7.6 Practice Exam with Questions & Answers | Set: 2

FortiGate_A and FortiGate_B are in the same autonomous system (AS), and FortiGate_A does not currently have route 172.16.1.248/30 in its routing table. However, FortiGate_B has this route as a connected route.

To dynamically advertise only 172.16.1.248/30 from FortiGate_B to FortiGate_A, the administrator must configure a BGP route map out on FortiGate_B that specifically permits only this prefix.

A BGP route map out on FortiGate_B controls which routes FortiGate_B advertises to FortiGate_A. If no filtering is applied, FortiGate_B might advertise all BGP-learned and connected routes, which is not what the administrator wants. The route map should include a prefix-list that explicitly allows only 172.16.1.248/30 and denies everything else.

Comprehensive and Detailed Explanation From Exact Extract of Enterprise Firewall 7.6 Administrator documents:

Based on the FortiOS 7.6 Administration Guide and the HA Virtual Clustering documentation, the exhibit demonstrates a Virtual Clustering environment where multiple VDOMs are distributed across an HA cluster.

In a virtual cluster setup, VDOMs are assigned to either virtual cluster 1 (vcluster 1) or virtual cluster 2 (vcluster 2). Each virtual cluster has its own independent primary unit selection process. The primary unit for a virtual cluster is determined based on the standard HA selection criteria: Monitored Interfaces > HA Uptime > Priority > Serial Number.

According to the exhibit:

Virtual Cluster 1 (edit 1) contains VDOMs "Core1" and "root".

Virtual Cluster 2 (edit 2) contains VDOM "Core2".

The HA uptime is stated to be the same for both devices.

For edit 2 (Core2), HQ-NGFW-1 has a priority of 150, while HQ-NGFW-2 has a priority of 120.

In both units, override is disabled (default).

Since the uptime is equal and no monitored interfaces are down, the cluster uses the Priority value to select the primary unit for each vcluster. Currently, HQ-NGFW-1 is the primary for Core2 because its priority (150) is higher than HQ-NGFW-2's (120). To ensure HQ-NGFW-2 handles the Core2 traffic, its priority for virtual cluster 2 must be increased to a value higher than 150. Option C (changing the priority from 120 to 200) achieves this.

Comprehensive and Detailed 150 to 200 words of Explanation From Exact Extract of Enterprise Firewall 7.6 Administrator documents:

According to the FortiOS 7.6 Administration Guide and the FortiGate Infrastructure study materials, inter-VDOM communication can be achieved using either software-based VDOM links or hardware-accelerated NPU VDOM links (vlinks).

While standard VDOM links (Option B) allow traffic to pass between VDOMs, they are processed by the system CPU, which can become a bottleneck in high-throughput environments. To ensure accelerated internet access as specified in the requirements, NPU vlinks (Option C) must be used. NPU vlinks are virtual interfaces created in pairs that allow traffic to be offloaded to the FortiGate’s Network Processor (NP6, NP7, etc.), significantly reducing latency and CPU overhead.

In the provided exhibit, the root VDOM has direct internet access, while VDOM1 and VDOMn do not. By configuring NPU vlinks between the non-root VDOMs and the root VDOM, you create a hardware-accelerated path. Traffic from the internal VDOMs is sent through the vlink to the root VDOM, which then forwards it to the Internet. This "hub-and-spoke" VDOM architecture, powered by NPU acceleration, ensures that all VDOMs share the internet connection without sacrificing performance.

Zero phase selectors in IPsec Phase 2 mean that no specific traffic selectors (subnets) are defined, allowing any traffic to be encrypted through the VPN tunnel. This can cause unintended traffic forwarding issues and disrupt network operations.

To prevent this from happening during future migrations:

● Using routing protocols ensures that only specific subnets are advertised over the tunnel. Dynamic routing (such as OSPF or BGP) helps define which networks should use the tunnel, preventing unintended traffic from being encrypted.

● Clearly defining phase 2 selectors avoids the problem of encrypting all traffic by explicitly stating the allowed source and destination subnets. This prevents the tunnel from affecting unrelated network traffic.

In a hub-and-spoke topology using OSPF over IPsec VPNs, the point-to-multipoint network type is necessary to establish neighbor adjacencies between the hub and spokes. This network type ensures that OSPF operates correctly without requiring a designated router (DR) and allows dynamic routing updates across the IPsec tunnels.

When multiple remote sites connect to the same hub using overlapping subnets, FortiGate needs to determine which route should be used for traffic forwarding. The route-overlap setting in IPsec Phase 2 allows FortiGate to handle this scenario by deciding whether to keep the existing route (use-old) or replace it with a new route (use-new).

In an ECMP (Equal-Cost Multi-Path) routing setup, both routes should be retained and balanced, but FortiGate does not support ECMP directly over overlapping routes in IPsec Phase 2. Instead, an administrator must decide which connection takes precedence using route-overlap settings.

neighbor-group:

● This command is used to group multiple BGP neighbors with the same configuration, reducing redundant configuration.

● Instead of defining individual BGP settings for each spoke, the administrator can create a neighbor-group and apply the same policies, reducing manual work.

neighbor-range:

● This command allows the configuration of a range of neighbor IPs dynamically, reducing the need to manually define each spoke neighbor.

● It automatically adds BGP neighbors that match a given prefix, simplifying deployment.

Since Core1 and Core2 are not designated as management VDOMs, they rely on the root VDOM for connectivity to external resources such as FortiGuard updates. If the root VDOM lacks a VDOM link to these VDOMs or cannot reach FortiGuard services, security features like web filtering will stop working.

Comprehensive and Detailed 150 to 200 words of Explanation From Exact Extract of Enterprise Firewall 7.6 Administrator documents:

According to the Fortinet Security Fabric 7.6 documentation and FortiAnalyzer study materials, when multiple FortiGate devices are part of a Security Fabric, logs are typically sent to a centralized FortiAnalyzer for a unified view of the network.

In the provided exhibit, the topology shows HQ-NGFW-1 as the Fabric Root and HQ-ISFW as a downstream device. One of the key benefits of the Security Fabric (Option C) is topology-wide visibility, where logs from different devices are correlated.

The traffic log table shows a "Malware" action for traffic originating from 10.0.2.51 (located behind HQ-ISFW) destined for a public IP. If UTM is not enabled on the HQ-ISFW itself, it cannot generate an Antivirus (AV) log. However, because HQ-ISFW is part of the Security Fabric, the traffic eventually passes through the upstream device, HQ-NGFW-1, to reach the internet. If UTM is enabled on HQ-NGFW-1 (Option B), that device will inspect the traffic, detect the malware, and generate the security log. FortiAnalyzer then displays this log as part of the unified threat view, associating it with the original source and the inspection point in the fabric path.