- A
Set the phase1 remote-gateway to 0.0.0.0 and enable 'accept-any-remote-gateway' on the hub
The hub must accept connections from any source IP since spokes have dynamic IPs. This is achieved by setting remote-gateway 0.0.0.0 and optionally enabling accept-any-remote-gateway.
- B
Set IKE version 2 to aggressive mode to allow rapid negotiation
Why wrong: IKEv2 does not support aggressive mode; it uses main mode only.
- C
Configure the hub with a static IP in the phase1 local-gateway interface
Why wrong: The hub's local gateway is its own IP, which is static. This is not a special requirement for ADVPN.
- D
Use a preshared key and set the local ID to the spoke's public IP
Why wrong: The spoke's public IP may change; setting the local ID to a dynamic IP would cause reconfiguration. Certificate-based auth is more typical for ADVPN.
Quick Answer
The answer is to set the phase1 remote-gateway to 0.0.0.0 and enable accept-any-remote-gateway on the hub. This configuration is required because spokes with dynamic IPs behind NAT will initiate the VPN from unknown source addresses, and the hub must accept IKE and ESP traffic from any source to establish the initial tunnel and later support shortcut tunnels via ADVPN. On the Fortinet NSE 7 Advanced Security NSE7 exam, this question tests your understanding that IKEv2 does not support aggressive mode, so the hub cannot rely on pre-shared key matching by IP; instead, it must use a wildcard peer ID and a 0.0.0.0 remote gateway to accept any remote gateway dynamic IP spokes. A common trap is confusing this with setting a local ID or enabling NAT traversal alone—neither solves the core requirement of accepting unknown source IPs. Memory tip: think “zero-zero equals any-any” for the hub’s phase1 interface.
NSE7 Advanced VPN and Zero Trust Practice Question
This NSE7 practice question tests your understanding of advanced vpn and zero trust. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network administrator is configuring a hub-and-spoke ADVPN with FortiGates. The spokes are behind NAT and use dynamic IPs. The hub has a static IP. Which IKEv2 configuration is REQUIRED to allow the spokes to initiate the VPN and receive shortcut tunnels?
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
Set the phase1 remote-gateway to 0.0.0.0 and enable 'accept-any-remote-gateway' on the hub
Aggressive mode is not supported in IKEv2 (only main mode). Setting the local ID is not sufficient for NAT traversal. Allowing IKE and ESP from any source is required because spokes may have dynamic IPs, and the hub must accept incoming connections from unknown source IPs. However, the key requirement for ADVPN is that the hub must accept connections from any source, which is achieved by setting the interface to 'any' or allowing 0.0.0.0/0. Option C is the common practice: the hub uses a wildcard selector and accepts connections from any peer ID. But the question asks for 'REQUIRED' – the most accurate is that the hub must be configured to accept connections from any source IP, which is done by setting the remote gateway to 0.0.0.0 or using a peer ID with accept-any. Option C is the best answer.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Set the phase1 remote-gateway to 0.0.0.0 and enable 'accept-any-remote-gateway' on the hub
- ✗
Set IKE version 2 to aggressive mode to allow rapid negotiation
Why it's wrong here
IKEv2 does not support aggressive mode; it uses main mode only.
- ✗
Configure the hub with a static IP in the phase1 local-gateway interface
Why it's wrong here
The hub's local gateway is its own IP, which is static. This is not a special requirement for ADVPN.
- ✗
Use a preshared key and set the local ID to the spoke's public IP
Why it's wrong here
The spoke's public IP may change; setting the local ID to a dynamic IP would cause reconfiguration. Certificate-based auth is more typical for ADVPN.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related NSE7 NAT questions on configuration and troubleshooting.
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FAQ
Questions learners often ask
What does this NSE7 question test?
Advanced VPN and Zero Trust — This question tests Advanced VPN and Zero Trust — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Set the phase1 remote-gateway to 0.0.0.0 and enable 'accept-any-remote-gateway' on the hub — Aggressive mode is not supported in IKEv2 (only main mode). Setting the local ID is not sufficient for NAT traversal. Allowing IKE and ESP from any source is required because spokes may have dynamic IPs, and the hub must accept incoming connections from unknown source IPs. However, the key requirement for ADVPN is that the hub must accept connections from any source, which is achieved by setting the interface to 'any' or allowing 0.0.0.0/0. Option C is the common practice: the hub uses a wildcard selector and accepts connections from any peer ID. But the question asks for 'REQUIRED' – the most accurate is that the hub must be configured to accept connections from any source IP, which is done by setting the remote gateway to 0.0.0.0 or using a peer ID with accept-any. Option C is the best answer.
What should I do if I get this NSE7 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related NSE7 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 21, 2026
This NSE7 practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NSE7 exam.
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