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Fortinet FCSS_NST_SE-7.6 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Authentication: This section evaluates the abilities of System Administrators and requires troubleshooting both local and remote authentication methods, including resolving Fortinet Single Sign-On (FSSO) problems for secure network access.
Topic 2
  • Security profiles: This part measures skills of Security Operations Specialists and covers identifying and resolving problems linked to FortiGuard services, web filtering configurations, and intrusion prevention systems to maintain protection across network environments.
Topic 3
  • System troubleshooting: This section of the exam measures the skills of Network Security Support Engineers and addresses diagnosing and correcting issues within Security Fabric setups, automation stitches, resource utilization, general connectivity, and different operation modes in FortiGate HA clusters. Candidates work with built-in tools to effectively find and resolve faults.
Topic 4
  • VPN: This section is aimed at IT Professionals and includes diagnosing and addressing issues with IPsec VPNs, specifically IKE version 1 and 2, to secure remote and site-to-site connections within the network infrastructure.
Topic 5
  • Routing: This section focuses on Network Engineers and involves tackling issues related to packet routing using static routes, as well as OSPF and BGP protocols to support enterprise network traffic flow.

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Fortinet FCSS - Network Security 7.6 Support Engineer Sample Questions (Q67-Q72):

NEW QUESTION # 67
Refer to the exhibit, which shows the modified output of the routing kernel.

Which statement is true?

Answer: C


NEW QUESTION # 68
A FortiGate administrator is troubleshooting a VPN that is failing to establish.
As a first step, the administrator is attempting to sniff the traffic using the command:
# diagnose sniffer packet any ''udp port 500 or udp port 4500 or esp'' 4 After several minutes there is still no output. What is the most Likely reason for this?

Answer: B

Explanation:
The administrator is running a packet sniffer with the filter 'udp port 500 or udp port 4500 or esp'. The result is "no output," even though the VPN is attempting to establish (failing).
* A. The VPN is configured to use IKE over TCP:
* Standard IPsec IKE negotiation uses UDP port 500 (IKE) and UDP port 4500 (NAT-T).
* However, if IKEv2 over TCP (RFC 8229) or Fortinet's proprietary IKE over TCP is configured (often used to bypass firewalls that block UDP), the traffic will use TCP (often port 4500 or 443).
* The sniffer filter explicitly looks for udp or esp (IP Protocol 50).
* If the traffic is encapsulated in TCP, it matches tcp protocol, not udp or esp (raw ESP). Therefore, the sniffer sees zero packets matching the filter.
* Why other options are incorrect:
* B: esp is a valid argument for diagnose sniffer packet. It is equivalent to filtering for IP protocol
50.
* C: If the ISP were blocking traffic, the sniffer (running on the local FortiGate) would still see the outbound packets generated by the FortiGate trying to initiate the connection. "No output" implies the local device isn't even generating packets matching that filter.
* D: Mismatched IKE versions would still generate IKE negotiation packets (proposals/errors) that would be captured by the sniffer.
Reference:
FortiGate Security 7.6 Study Guide (IPsec VPN): "IKEv2 over TCP is available for environments where UDP 500/4500 is blocked. When enabled, IKE and ESP packets are encapsulated in TCP headers."


NEW QUESTION # 69
Refer to the exhibit, which shows a partial output from the get router info routing-table database command.

The administrator wants to configure a default static route for port3 and assign a distance of 50 and a priority of 0.
What will happen to the port1 and port2 default static routes after the port3 default static route is created?

Answer: B


NEW QUESTION # 70
Refer to the exhibit.

FortiGate is showing continuous high CPU usage During a maintenance window, the CLI command diagnose sys top displays the output shown in the exhibit. The CLI command diagnose twat application ipsmonitor 5 was run. but the CPU usage by daemon ipsengine did not drop Which immediate action can you take to reduce the CPU usage effectively?

Answer: D

Explanation:
To solve this high CPU usage scenario involving the ipsengine, we must understand the specific functions of the diagnose test application ipsmonitor commands shown in the troubleshooting steps.
Analyze the Situation:
Exhibit: The diagnose sys top output shows the ipsengine process is in a run state (R) consuming 99% CPU.
Previous Action: The administrator already ran diagnose test application ipsmonitor 5.
Result: The CPU usage did not drop.
Understand the Commands:
diagnose test application ipsmonitor 5: This command toggles IPS Bypass Mode. When enabled, the IPS engine lets traffic pass through without inspection.
Implication: If the CPU was high due to traffic volume, enabling bypass would drop the CPU load immediately.
Failure: Since the CPU remained at 99% after bypass, the ipsengine process is likely frozen, stuck, or in an internal infinite loop unrelated to the current traffic flow. The process itself is the problem, not the traffic volume.
Evaluate the Solution (Option B):
diagnose test application ipsmonitor 2: This command toggles the IPS engine's Enable/Disable status.
Because the engine is stuck (bypass failed to relieve pressure), the "Immediate action" required is to stop or restart the process entirely.
Running option 2 effectively disables/kills the stuck IPS engine instance, which will immediately drop the CPU usage to near zero. (It can then be toggled again to restart it).
Why other options are incorrect:
A (Reduce signatures): This is a tuning measure for normal operation, not an immediate fix for a stuck process at 99% CPU.
C (Disable IPS on policies): This is a configuration change that takes time and requires a commit; it is not the most immediate diagnostic tool available.
D (Bypass all IPS engines): This describes the action of command 5 (Bypass), which the prompt explicitly states was already performed and failed.
Reference:
FortiGate Security 7.6 Study Guide (IPS & Diagnostics): "Troubleshooting IPS high CPU: 1. Check top. 2. Try bypass (ipsmonitor 5). 3. If CPU persists, restart the engine (ipsmonitor 99 or 2)."


NEW QUESTION # 71
Refer to the exhibit.

The exhibit shows a session entry. Which statement about this TCP session is true?

Answer: C

Explanation:
The correct answer is C. The session is offloaded using NPU.
The exact session example in the study guide shows:
proto=6 โ†’ this is a TCP session
expire=3599 โ†’ the session will expire in 3599 seconds, not in one second hook=post dir=org act=snat 10.9.31.117:45388->200.8.57.5:443(10.1.0.3:45388) hook=pre dir=reply act=dnat 200.8.57.5:443->10.1.0.3:45388(10.9.31.117:45388) npu info: ... offload=8/8 ...
and the slide explicitly states: "Offloaded in both directions using NP6" The study guide also explains this exact point clearly:
"Counters for hardware acceleration-The presence of the npu info field indicates the session has been offloaded to hardware acceleration. In this example, traffic is being offloaded in both directions using network processor (NP) 6, which is represented by the value of 8." Why the other options are wrong:
A is wrong because expire=3599, not 1. The duration=1 field means the session has existed for 1 second, not that it will expire in 1 second.
B is wrong because the original session is from 10.9.31.117 to the remote server 200.8.57.5:443. The IP 10.1.0.3 is the SNAT-translated source address, not the final destination.
D is not the best answer for this single-select question. The reply is indeed DNATed back toward the original client, but the exact validated takeaway highlighted by the study guide for this exhibit is the NPU offload state.


NEW QUESTION # 72
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