Get FCSS_EFW_AD-7.4 Dumps : Verified FCSS - Enterprise Firewall 7.4 Administrator

InFortiManager,pre-run CLI templatesare used inZero-Touch Provisioning (ZTP)andLow-Touch Provisioning (LTP)to configure a FortiGate devicebeforeit is fully managed by FortiManager.

These templatesapply configurationswhen a device is initially provisioned.Once the pre-run CLI template is executed, FortiManagerautomatically unassignsit from the device because it isnot meant to persistlike other policy configurations. This prevents conflicts and ensures that the FortiGate configuration isnot repeatedly appliedafter the initial setup.

The diagram shows a FortiGate connected to two FortiSwitches, which suggests the use ofFortiLink, Fortinet's protocol for managing switches directly from a FortiGate. Since multiple connections are being used, the LAN interface must be set to802.3ad (LAG)mode to aggregate the links for redundancy and load balancing.

This setup allows FortiGate to handle VLAN assignments dynamically, as seen withVLAN 10 (192.168.15.1/24). FortiLink ensures seamless integration between FortiGate and FortiSwitches, making STP unnecessary because Fortinet'sMCLAGprevents loops at Layer 2. SD-WAN, on the other hand, is used for WAN interfaces and does not apply to switch connectivity in this scenario.

FortiGate devices withNP6 (Network Processor 6) accelerationoffload traffic directly to hardware, bypassing the CPU for improved performance. Whenauto-asic-offloadis enabled in a firewall policy, most of the trafficdoes not reach the CPU, which means it won't be captured by the standard sniffer trace command.

Since NP6-accelerated traffic is handled entirely in hardware, onlya small portion of initial packets(such as session setup packets or exceptions) might be seen in the sniffer output. To capture all packets, the administrator must disable hardware offloading using:

config firewall policy

edit

set auto-asic-offload disable

end

Disabling ASIC offload forces traffic to be processed by the CPU, allowing the sniffer tool to capture all packets.

InADVPN (Auto-Discovery VPN) configurations, security concerns includeprotecting peer IDsduring VPN establishment. Peer IDs are exchanged in theIKE (Internet Key Exchange) negotiation phase, and their exposure could lead toprivacy risks or targeted attacks.

?IKEv2 encrypts peer IDs, making itmore securecompared to IKEv1, where peer IDs can beexposed in plaintextin aggressive mode.

?IKEv2 also provides better performance and flexibilitywhile supporting dynamic tunnel establishment in ADVPN.

When usingIPsec VPNsandVXLAN, additional headers are added to packets, which can exceed thedefault 1500-byte MTU. This can lead tofragmentation issues, dropped packets, or degraded performance.

To resolve this, theMTU (Maximum Transmission Unit)should be adjustedonly if all devices in the network path support it. Otherwise, some devices may still drop or fragment packets, leading to continued issues.

Why adjusting MTU helps:

?VXLAN adds a 50-byte overheadto packets.

?IPsec adds additional encapsulation(ESP, GRE, etc.), increasing the packet size.

? If packets exceed the MTU, they may befragmented or dropped, causing intermittent connectivity issues.

? Lowering the MTU on interfaces ensurespackets stay within the supported size limitacross all network devices.