NSE7_NST-7.2 Exam Dumps - Fortinet Certification Questions and Answers

The exhibit shows a sniffer capture where TCP port 8013 is being used for communication. The communication appears one-way, indicating potential issues with the upstream FortiGate receiving the necessary packets or being able to respond.

To ensure successful communication in a Security Fabric setup:

Ensure TCP port 8013 is not blocked along the way: Verify that no firewalls or network devices between the downstream and upstream FortiGates are blocking TCP port 8013. This port is crucial for Security Fabric communication.

Authorize the downstream FortiGate on the root FortiGate: In the Security Fabric, the root FortiGate must recognize and authorize the downstream FortiGate to allow proper communication and management.

Enable Security Fabric/Fortitelemetry on the receiving interface of the upstream FortiGate: The upstream FortiGate must have the Security Fabric or Fortitelemetry enabled on the interface that receives the communication from the downstream FortiGate. This enables proper data exchange and monitoring within the Security Fabric.

References

Fortinet Documentation on Security Fabric Configuration

Fortinet Community Discussion on Port Requirements

Kernel Slabs Overview:

The slab allocator in the Linux kernel is used for efficient memory management. It groups objects of the same type into caches, which are divided into slabs.

Each slab contains multiple objects and helps to minimize fragmentation and enhance memory allocation efficiency.

Interpreting the Exhibit:

The exhibit shows output related to various kernel slab caches.

The line forip6_sessionindicates that there are 1300 kB allocated for this slab, which means the total memory size allocated for IPv6 session objects in the kernel is 1300 kB.

References:

Fortinet Community: Explanation of kernel slab allocation and usage​(Welcome to the Fortinet Community!)​​(Hammertux)​.

Linux Kernel Documentation: Slab Allocator details​(Hammertux)​.

Current Configuration Analysis:

The firewall policy currently allows ICMP traffic from port1 to port3, enabling the ICMP echo request to reach the server.

However, for the server to send an ICMP echo reply back to the laptop, the traffic must be allowed from port3 to port1.

Required Configuration:

To ensure the server at10.4.0.1/24can send the ICMP echo reply back to the laptop at10.1.0.1/24, the administrator needs to configure a new firewall policy.

The policy must explicitly allow ICMP traffic from port3 to port1.

Steps to Configure:

Access the FortiGate configuration interface.

Navigate to the Firewall Policy section.

Create a new policy allowing ICMP traffic from port3 to port1.

Save and apply the new policy to ensure bidirectional ICMP traffic is permitted.

References

Fortinet Network Security 7.2 Support Engineer Documentation

FortiGate Firewall Policy Configuration Guides

Understanding protocol states:

proto_state=00: Indicates no traffic or a closed session.

proto_state=01: Typically indicates one-way ICMP traffic or a partially established TCP session.

proto_state=10: Indicates an established TCP session, where the session has completed the three-way handshake and both sides can send and receive data.

proto_state=11: Often indicates a fully established and active bidirectional session.

Explanation of correct answer:

proto_state=10is the correct indication for an established TCP session as it signifies that the session is fully established and active.

References

Fortinet Network Security 7.2 Support Engineer Documentation

Fortinet Firewall Protocol State Documentation