CCSM Advanced Firewall Troubleshooting Practice Question
An administrator is troubleshooting intermittent connectivity issues through a Security Gateway. They need to capture packets and view only those that are dropped by the firewall's security policy, to identify which rule is blocking traffic. Which command should they use?
⚠ Common exam trap
Watch out — candidates often confuse packet capture tools like tcpdump or fw monitor with policy drop analysis tools like fw ctl zdebug drop.
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
✓
fw ctl zdebug drop
The administrator needs to see which packets are dropped and why, to pinpoint the blocking rule. The fw ctl zdebug drop command provides kernel-level debug output for dropped packets, including drop reasons and rule references. This is the most direct and efficient method for this specific troubleshooting task.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
cpstat fw -f policy
Why it's wrong here
cpstat fw -f policy displays policy installation status and statistics, not live packet drop information. It cannot show which packets are being dropped or by which rule, so it is not suitable for real-time troubleshooting of dropped traffic.
- ✗
tcpdump -i any -n
Why it's wrong here
While tcpdump captures packets, it operates at the OS level and does not provide information about the firewall's policy decisions or which rule dropped a packet. It would show packets but not why they were dropped, so it does not fulfill the requirement of identifying the blocking rule.
- ✓
fw ctl zdebug drop
Why this is correct
fw ctl zdebug drop captures real-time debug messages specifically for packets dropped by the firewall, including the reason and often the rule number. This directly addresses the need to identify which policy rule is blocking traffic, making it the correct tool for this scenario.
- ✗
fw monitor -e 'accept;'
Why it's wrong here
This fw monitor filter shows only accepted packets, which is the opposite of what is needed. The administrator needs to see dropped packets to identify blocking rules, so this filter would exclude the relevant traffic and fail to provide the required visibility into policy drops.
About these practice questions
Courseiva writes every CCSM question from scratch — 219 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Check Point exam blueprint
This CCSM practice question is part of Courseiva's free Check Point 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 CCSM exam.