The correct syntax is F-SBID( --name "malicious_domain"; --pattern "example.com"; --service HTTP; ). This is the proper structure because FortiGate’s custom IPS signatures must begin with the F-SBID header, followed by required attributes enclosed in parentheses, with each attribute separated by a semicolon and a space. The --name attribute uniquely identifies the signature, --pattern defines the string to match in the traffic payload, and --service restricts detection to a specific protocol like HTTP, which is essential for targeting web-based malicious domains. On the Fortinet NSE 7 Advanced Security NSE7 exam, this question tests your ability to recall the exact syntax for custom signatures, often appearing in a multiple-choice format where common traps include omitting the semicolons, using incorrect attribute names like --content instead of --pattern, or forgetting the --service filter. A helpful memory tip is to think of the acronym NPS: Name, Pattern, Service—each preceded by double dashes and separated by semicolons, just like the correct answer.
NSE7 Advanced Threat Protection Practice Question
This NSE7 practice question tests your understanding of advanced threat protection. 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.
An administrator configures a custom IPS signature to detect traffic to a specific malicious domain. Which syntax is correct for a custom IPS signature in FortiGate?
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
config ips custom signature edit "malicious_domain" set signature "alert tcp any any -> any any (msg:"malicious"; content:"example.com";)" end
Why it's wrong here
That is Snort syntax, not FortiGate custom IPS format.
✗
config firewall policy edit 1 set ips-filter "malicious_domain" end
Why it's wrong here
IPS filters are not the same as custom signatures.
✗
set ips-sensor custom-signature "malicious_domain" pattern "example.com"
Why it's wrong here
Not a valid FortiGate command; custom signatures use F-SBID.
This is the correct FortiGate custom IPS signature syntax using F-SBID.
Related concept
Static NAT maps one inside address to one outside address.
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.
Trap categories for this question
Command / output trap
Not a valid FortiGate command; custom signatures use F-SBID.
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.
Advanced Threat Protection — This question tests Advanced Threat Protection — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: F-SBID( --name "malicious_domain"; --pattern "example.com"; --service HTTP; )
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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Question Discussion
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