Fortinet NSE7_SSE_AD-25 Dumps

The Network Lockdown feature in FortiSASE is a specialized security control designed to ensure that managed endpoints remain protected by the SASE security stack at all times.

Mechanism of Action: Network lockdown relies specifically on the connection status of the tunnel to FortiSASE. When this feature is enabled in the Endpoint Profile, the FortiClient agent monitors whether the secure VPN tunnel (SSL or IPsec) to a FortiSASE Point of Presence (PoP) is active.

Enforcement Logic: If the agent detects that the tunnel is disconnected, it immediately places the endpoint's network interface into a "locked" state. In this state, all inbound and outbound network traffic is blocked, with the exception of traffic required to re-establish the connection to the FortiSASE infrastructure.

Purpose: This prevents "leakage" where an endpoint might communicate directly with the internet without inspection if the VPN tunnel drops or is manually disabled by the user. It essentially mandates that the device is either connected to FortiSASE or has no network access at all.

Analysis of Incorrect Options:

Option A and B: While malware and vulnerabilities affect the security posture, they trigger different remediation actions (like quarantine or patching) rather than the "Network Lockdown" tunnel-state feature.

Option D: ZTNA tags identify the security posture to allow or deny access to specific applications, whereas Network Lockdown is a binary state (On/Off) affecting all network traffic based purely on tunnel connectivity.

IP Address Management (IPAM) in FortiSASE is responsible for automatically allocating subnets to various services, including VPN tunnels and Edge devices. When an administrator modifies the default IPAM configuration, they must adhere to specific architectural scaling requirements.

Subnet Requirements per PoP: FortiSASE architecture requires a minimum amount of address space to be available for each provisioned Security Point of Presence (PoP) to handle internal routing and endpoint assignments. For the IPAM engine to function correctly and distribute unique subnets across the global infrastructure, the pool must provide at least one /20 subnet per security PoP. If the available space is smaller than this per-PoP requirement, the allocation logic may fail or produce unpredictable routing behavior.

Impact of Excessive Exclusions: In the exhibit (image_578940.png), the customer has defined a large summary pool of 172.16.0.0/12. However, they have configured eight separate /15 excluded subnets: 172.16.0.0/15, 172.18.0.0/15, 172.20.0.0/15, 172.22.0.0/15, 172.24.0.0/15, 172.26.0.0/15, 172.28.0.0/15, and 172.30.0.0/15.

Calculating the Exhaustion: A /12 network contains exactly eight /15 blocks. By excluding all eight /15 ranges listed in the exhibit, the customer has effectively excluded 100% of the available addresses from the primary 172.16.0.0/12 pool.

Connectivity Problems: When the IPAM pool is exhausted or overly restricted, FortiSASE cannot assign valid, non-overlapping subnets to the PoPs. This leads to connectivity problems for remote users and can cause the system to "fall back" to ranges it believes are available, even if they were intended to be excluded, or simply fail to establish tunnels entirely.

To resolve this, the administrator must ensure that the excluded subnets do not consume the entire pool and that the remaining unexcluded space is large enough to provide a /20 block for every active PoP in their subscription.

When configuring FortiSASE Secure Private Access (SPA) with SD-WAN integration, establishing a routing adjacency between FortiSASE and the FortiGate SD-WAN hub requires the use of the Border Gateway Protocol (BGP).

BGP (Border Gateway Protocol):

BGP is widely used for establishing routing adjacencies between different networks, particularly in SD-WAN environments.

It provides scalability and flexibility in managing dynamic routing between FortiSASE and the FortiGate SD-WAN hub.

Routing Adjacency:

BGP enables the exchange of routing information between FortiSASE and the FortiGate SD-WAN hub.

This ensures optimal routing paths and efficient traffic management across the hybrid network.