NSE7_NST-7.2 Exam Dumps : Fortinet NSE 7 - Network Security 7.2 Support Engineer

RTT (Round Trip Time):

RTT in the context of the FortiGuard server list indicates the time it takes for a request to be sent to a FortiGuard server and for a response to be received.

This metric helps determine the latency between the FortiGate device and the FortiGuard servers, which is crucial for ensuring efficient and quick updates and responses for services like web filtering and antivirus updates.

Server Selection:

The FortiGate device uses RTT values to prioritize servers. Servers with lower RTT values are preferred as they respond faster, ensuring minimal delay in processing requests.

This improves the overall performance of FortiGuard services by reducing the time it takes to communicate with the servers.

References:

Fortinet Community: Troubleshooting FortiGuard server connections and RTT values​(Welcome to the Fortinet Community!)​​(Fortinet Docs)​.

Fortinet Documentation: FortiGuard server settings and RTT explanation​(Welcome to the Fortinet Community!)​​(Fortinet Docs)​.

The session table entry provided shows detailed information about a specific network session passing through the FortiGate device. From the session details, we can see that the session has various attributes such as state, protocol, policy, and inspection details.

The session state (proto_state=11) indicates that the session is being actively processed and inspected.

Thenpd_state=00000000suggests that the session is being handled by the CPU rather than offloaded to a Network Processor (NP).

The session is marked for security profile inspection, evident from the detailed byte/packet counts and other session parameters.

From these indicators, it's clear that FortiGate is using its CPU to perform security profile inspection on this session rather than simply forwarding the traffic without inspection or relying solely on IPS inspection.

References

Fortinet Documentation on Session Table

Fortinet Community Discussion on Session Table

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)​.