Fortinet NSE7_SSE_AD-25 Dumps Questions Answers

Based on the detailed analysis of the provided exhibits (image_65feb6.jpg), the connectivity failure is caused by a mismatch in the Hub firewall policy configuration.

Endpoint Analysis: The Network Diagram shows the FortiClient endpoint has an IP address of 100.65.80.2/20 and currently carries the FortiSASE-Compliant ZTNA tag.

FortiSASE Policy Validation: The Private access policy on FortiSASE shows an "Accept" rule for traffic originating from "FortiSASE-Compliant" sources destined for "All Private Access Traffic". This confirms the traffic is successfully leaving the FortiSASE PoP.

Routing Validation: The Learned BGP Routes on FortiSASE table shows the prefix 10.160.160.0/24 (the Server subnet) is correctly received via Next Hop 10.11.11.1. Routing is correctly established.

Hub Firewall Policy Error: Examining the Hub firewall policy (edit 7), the srcaddr is set to "SASE_Remote_Access". Looking at the address object definition for "SASE_Remote_Access," it is configured with the subnet 10.11.11.0 255.255.255.0.

The Conflict: The FortiClient's actual IP address (100.65.80.2) does not fall within the 10.11.11.0/24 range defined in the policy's source address. On a FortiGate hub, for traffic to be permitted through the tunnel to the internal server, the firewall policy must include the specific subnet assigned to the remote clients, not just the tunnel interface subnet. Because the FortiClient address range is missing from the hub's policy, the traffic is dropped at the hub.

The reason for the ping failures is due to the quick mode selectors restricting the subnet. Quick mode selectors define the IP ranges and protocols that are allowed through the VPN tunnel, and if they are not configured correctly, traffic to certain subnets can be blocked.

Quick Mode Selectors:

Quick mode selectors specify the source and destination subnets that are allowed to communicate through the VPN tunnel.

If the selectors do not include the subnet of the webserver (192.168.10.0/24), then the traffic will be restricted, and the ping will fail.

Diagnostic Output:

The diagnostic output shows the VPN configuration details, but it is important to check the quick mode selectors to ensure that the necessary subnets are included.

If the quick mode selectors are too restrictive, they will prevent traffic to and from the specified subnets.

Configuration Check:

Verify the quick mode selectors on both the FortiSASE and FortiGate hub to ensure they match and include the subnet of the webserver.

Adjust the selectors to allow the necessary subnets for successful communication.

To meet the requirement of inspecting all endpoint internet traffic on FortiSASE while excluding Google Maps traffic from the FortiSASE VPN tunnel and redirecting it to the endpoint's physical interface, you should configure split tunneling. Split tunneling allows specific traffic to bypass the VPN tunnel and be routed directly through the endpoint's local interface.

Split Tunneling Configuration:

Split tunneling enables selective traffic to be routed outside the VPN tunnel.

By configuring the Google Maps Fully Qualified Domain Name (FQDN) as a split tunneling destination, you ensure that traffic to Google Maps bypasses the VPN tunnel and uses the endpoint's local interface instead.

Implementation Steps:

Access the FortiSASE endpoint profile configuration.

Add the Google Maps FQDN to the split tunneling destinations list.

This configuration directs traffic intended for Google Maps to bypass the VPN tunnel and be routed directly through the endpoint's physical network interface.