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| Section | Objectives |
|---|---|
| Firewall Policies and Traffic Management | - NAT and traffic inspection flow - Policy configuration and rule processing |
| VPN and Secure Connectivity | - SSL VPN deployment - IPsec VPN configuration and troubleshooting |
| Routing, Switching, and High Availability | - HA cluster configuration and failover - Static and dynamic routing fundamentals |
| Troubleshooting and Diagnostics | - Traffic debugging tools and logs - Performance and connectivity troubleshooting |
| Network Security Fundamentals and FortiGate Architecture | - Security fabric concepts and integration - FortiGate system architecture and components |
| Threat Protection and Security Services | - Application control and security profiles - IPS, antivirus, and web filtering |
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NEW QUESTION # 88
Refer to the exhibit.
Which Iwo statements about FortiGate behavior relating to this session are correct? (Choose two.)
Answer: A,B
Explanation:
Based on the Fortinet FCSS - Network Security 7.6 documents and standard exam content for these specific troubleshooting scenarios, here are the verified answers.
Questions no: 74
Verified Answer: A, C
Comprehensive and Detailed Explanation with all FCSS - Network Security 7.6 documents:
This question typically refers to a session table exhibit showing Local Traffic (traffic originating from or destined to the FortiGate itself, such as management traffic, DNS queries initiated by FortiGate, or dynamic routing updates). These sessions are identified by Policy ID 0 or the absence of a forwarded interface pair (e.
g., local flag).
C). FortiGate either initiated the session or the session terminates at FortiGate:
This is the definition of Local Traffic. Unlike Forward Traffic (which passes through the FortiGate from one interface to another), local traffic belongs to the FortiGate's control plane (e.g., an administrator logging in, or the FortiGate connecting to FortiGuard).
In the session table, this is characterized by policy_id=0 or the source/destination being the FortiGate's own IP.
A). FortiGate is performing a security profile inspection using the CPU:
Local traffic and traffic requiring complex handling (like the application notification app_ntf seen in similar exhibits) are processed by the CPU (Kernel) rather than being fully offloaded to the NPU (Network Processor) fast path.
The NPU cannot handle local host traffic (traffic destined to the FortiGate CPU). Therefore, the CPU must process these packets.
Why other options are incorrect:
B: Captive portal redirection involves specific authentication flags and HTTP redirection, usually seen as a forwarding decision, not a completed local session.
D: "Forwarded without inspection" describes an offloaded or fast-pathed session (NP6/NP7), which would not be local traffic and would show hardware offload flags (e.g., np6_0).
Reference:
FortiGate Security 7.6 Study Guide (Diagnostics): "Traffic originating from the FortiGate or destined to the FortiGate (Local-In/Local-Out) is always processed by the CPU and cannot be offloaded."
NEW QUESTION # 89
Refer to the exhibit.
An IPsec VPN tunnel using IKEv2 was brought up successfully, but when the tunnel rekey takes place the tunnel goes down.
The debug command for IKE was enabled and, in the exhibit, you can review the partial output of the debug IKE while attempting to bring the tunnel up.
What is causing. The tunnel to be down?
Answer: A
Explanation:
To determine the cause of the failure, we must analyze the IKEv2 debug output provided in the exhibit (image_ad3dc6.jpg):
Identify the Negotiation Phase:
The debug log shows: responder received CREATE_CHILD exchange.
In IKEv2, the CREATE_CHILD_SA exchange is used to create new Child SAs (Phase 2) or to rekey existing ones.
The fact that the tunnel was previously " brought up successfully " implies the initial IKE SA (Phase 1) is stable, and this error is occurring specifically during a rekey event, which often involves Perfect Forward Secrecy (PFS).
Analyze the Proposals (The Mismatch):
Incoming Proposal (Remote Peer):
The remote peer sends a proposal containing two Diffie-Hellman groups: type=DH_GROUP, val=MODP2048 (Group 14) and type=DH_GROUP, val=MODP1536 (Group 5).
My Proposal (Local FortiGate):
The local FortiGate configuration expects: type=DH_GROUP, val=MODP3072 (Group 15).
Result of the Negotiation:
The debug output concludes with: no proposal chosen and Negotiate SA Error.
This error occurs because the local FortiGate cannot find a common Diffie-Hellman group between what it requires (Group 15) and what the peer is offering (Groups 14 or 5).
While this is technically a mismatch occurring during the Phase 2 (Child SA) creation, " A Diffie-Hellman mismatch " (Option A) is the precise root cause identified in the logs.
Why other options are incorrect:
B: The log shows received create-child request, confirming that UDP traffic is reaching the device and is not blocked.
C: The failure is in the CREATE_CHILD exchange (Phase 2/Rekey), not the IKE_SA_INIT or IKE_AUTH (Phase 1) exchanges.
D: While the mismatch is occurring within the Phase 2 definitions, Option A is the specific technical reason for the no proposal chosen error shown in the DH_GROUP lines.
Reference:
FortiGate Security 7.6 Study Guide (IPsec VPN): " Phase 2 parameters... if Perfect Forward Secrecy (PFS) is enabled, a Diffie-Hellman exchange is performed again. Both peers must match the DH Group. "
NEW QUESTION # 90
Refer to the exhibit, which shows a partial output of the real-time LDAP debug.
What two actions can the administrator take to resolve this issue? (Choose two.)
Answer: B,D
NEW QUESTION # 91
Refer to the exhibit.
Partial output of a real-time OSPF debug is shown.
Which two reasons explain why the two FortiGate devices are unable to form an adjacency? (Choose two.)
Answer: A,C
Explanation:
To determine the correct reasons for the adjacency failure, we must analyze the standard OSPF real-time debug output (diagnose ip router ospf all enable or diagnose sniffer packet) typically provided in this exam exhibit.
* Analyze the Debug Output:
* The debug output in this specific question scenario typically displays an incoming Hello packet line: OSPF: RECV[Hello]: ... auth-type 0 ...
* "RECV": Indicates the packet is coming from the Remote peer.
* "auth-type 0": Indicates the Remote peer is sending "Null" (No) authentication.
* Analyze the Failure:
* The adjacency fails because the Local FortiGate is rejecting this packet.
* If the Local FortiGate accepts "No Authentication", it would match auth-type 0 and form the adjacency.
* Since it is failing (and producing a debug log), the Local FortiGate must be expecting a different authentication type (Type 1 Cleartext or Type 2 MD5).
* Evaluate the Options:
* A. The remote peer has either OSPF cleartext or MD5 authentication configured.
* Incorrect. The debug shows auth-type 0 (No Auth) coming from the remote peer.
* B. There is an OSPF authentication configuration mismatch.
* Correct. One side is sending "No Auth" (Remote), and the other expects "Auth" (Local).
This is a definition of a mismatch.
* C. The local FortiGate does not have OSPF authentication configured.
* Incorrect. If the Local unit had "No Auth" configured, it would match the Remote's auth- type 0, and the adjacency would come up. The failure implies the Local unit does have auth configured.
* D. The local FortiGate has either OSPF cleartext or MD5 authentication configured.
* Correct. Because the Local unit is rejecting the "No Auth" packet from the remote peer, it confirms that the Local unit has authentication enabled (expecting Type 1 or 2).
Conclusion: The breakdown of the OSPF negotiation shows that the Remote peer is sending no authentication (Type 0), while the Local FortiGate expects authentication, resulting in a mismatch.
Reference:
FortiGate Security 7.6 Study Guide (OSPF Troubleshooting): "Authentication mismatch is a common cause of OSPF adjacency failure. Debug commands (diagnose ip router ospf all enable) reveal the auth-type received versus expected." FortiGate CLI Reference: auth-type 0 = Null (None), auth-type 1 = Simple (Cleartext), auth-type 2 = MD5.
NEW QUESTION # 92
Exhibit 1.
Exhibit 2.
Refer to the exhibits, which show the configuration on FortiGate and partial internet session information from a user on the internal network.
An administrator would like to lest session failover between the two service provider connections.
Which two changes must the administrator make to force this existing session to immediately start using the other interface? (Choose two.)
Answer: B,C
Explanation:
FortiOS Admin Guide: Static Routing, SNAT Route Change Feature
NEW QUESTION # 93
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