NSE7 Advanced VPN and Zero Trust Practice Question
A FortiGate administrator wants to implement ZTNA to control access to an internal application server. Users will access the application via FortiClient. Which configuration step is REQUIRED to allow FortiClient to forward traffic to the ZTNA gateway?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a ZTNA gateway on the FortiGate with an access proxy rule for the application
To allow FortiClient to forward traffic to the ZTNA gateway, the FortiGate must be configured as a ZTNA gateway with an access proxy rule that maps the application to a specific hostname and port. FortiClient then connects to the ZTNA gateway's proxy address, which forwards traffic to the internal application server. Option A is incorrect because a CA-signed certificate is not required for FortiClient; FortiGate can use a self-signed certificate for ZTNA. Option B is incorrect because a firewall policy from WAN to the application server would bypass ZTNA and expose the server directly. Option D is incorrect because the application server does not need to trust FortiClient's IP range; ZTNA uses identity-based access, not IP-based.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Install a CA-signed certificate on FortiClient
Why it's wrong here
FortiClient validates the ZTNA gateway's certificate, not its own; installing a CA-signed certificate on the client does not enable traffic forwarding. This is tempting because client certificates are used for mutual TLS authentication in other zero-trust deployments.
- ✗
Create a firewall policy from the WAN interface to the application server
Why it's wrong here
ZTNA traffic from FortiClient arrives at the FortiGate's ZTNA access proxy, not the WAN interface, so a WAN-to-server policy does not match the tunnel. It is tempting because WAN-to-server policies are standard for publishing services directly to the internet.
- ✓
Configure a ZTNA gateway on the FortiGate with an access proxy rule for the application
Why this is correct
FortiClient tunnels application traffic to the FortiGate's access proxy, so the gateway and its access proxy rule must exist before FortiClient can forward anything. Without this rule, FortiClient has no ZTNA destination to send traffic to, and access control cannot be enforced.
- ✗
Configure the application server to accept connections from FortiClient's IP range
Why it's wrong here
ZTNA tunnels traffic to the FortiGate access proxy, so the application server sees the gateway's address, not FortiClient's; permitting FortiClient's range is unnecessary. This is tempting when clients connect directly, where such a rule would be required.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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