Question 720
A FortiOS 7.6 team examines: A network team needs to separate the tunnel’s cryptographic health from the application routing test. Select TWO complementary choices: the most appropriate corrective action AND the specific evidence confirming success.
Explanation
Correct Answers
For the observed situation (A network team needs to separate the tunnel’s cryptographic health from the application routing test), the most specific acceptance evidence is: Route lookup, tunnel counters and narrow firewall policies confirm authorized packets cross the correct VPN interface. It validates the recommended response: Use supported route-based IPsec tunnel interfaces with appropriate routing and firewall policy for protected application subnets. This addresses the documented risk: A valid tunnel negotiation alone does not install the necessary destination route or permit application traffic.
The reported FortiOS 7.6 condition is: A network team needs to separate the tunnel’s cryptographic health from the application routing test. The targeted administrative response is: Use supported route-based IPsec tunnel interfaces with appropriate routing and firewall policy for protected application subnets. The relevant failure risk is: A valid tunnel negotiation alone does not install the necessary destination route or permit application traffic. Validate with: Route lookup, tunnel counters and narrow firewall policies confirm authorized packets cross the correct VPN interface.
Incorrect Answers
Redundant site-to-site IPsec peers (5.1) addresses another technical failure: Two configured tunnels do not guarantee recovery if both depend on the same WAN circuit or backup routes are missing. This choice can be useful for that problem, but it does not establish the Route-based IPsec tunnel interface design control being assessed here.
IPsec phase-one ike identity and proposals (5.1) would demonstrate or implement: Both intended IKE peers report an established phase-one security association with approved algorithms and correct identities. This case instead tests Route-based IPsec tunnel interface design; the choice measures or changes another part of the system.
VPN encryption rekey and lifetime compatibility (5.1) would demonstrate or implement: Mismatched peer behavior during SA renewal can create periodic outages even when initial tunnel establishment succeeds. The paired-answer requirement concerns Route-based IPsec tunnel interface design; this alternative does not provide the matching intervention and separate acceptance evidence.