CEH Enumeration and System Hacking Practice Question
This CEH practice question tests your understanding of enumeration and system hacking. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
After compromising a system, an attacker wants to erase their tracks. They clear the Windows Event Logs using `wevtutil cl` commands. However, the logs are forwarded to a remote SIEM. Which covering tracks technique would be MOST effective to avoid detection?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Modify specific event log entries to remove evidence of their actions
If logs are forwarded to a remote SIEM, local log deletion will still leave traces in the SIEM. A better approach is to manipulate specific log entries (e.g., modify or delete only the incriminating entries) to avoid raising alert on bulk deletion. However, the best among options is to modify logs selectively.
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.
✓
Modify specific event log entries to remove evidence of their actions
Why this is correct
Selective modification can remove incriminating entries while keeping normal logging, reducing suspicion.
Related concept
Static NAT maps one inside address to one outside address.
✗
Disable Windows Event Log service (EventLog)
Why it's wrong here
Disabling the service would stop forwarding, but the SIEM would notice the gap.
✗
Use a rootkit to hide files and processes
Why it's wrong here
Rootkits hide activities but do not cover logs.
✗
Encrypt the log files
Why it's wrong here
Encryption would draw attention and may break log forwarding.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CEH question in full detail.
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 CEH NAT questions on configuration and troubleshooting.
Enumeration and System Hacking — This question tests Enumeration and System Hacking — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Modify specific event log entries to remove evidence of their actions — If logs are forwarded to a remote SIEM, local log deletion will still leave traces in the SIEM. A better approach is to manipulate specific log entries (e.g., modify or delete only the incriminating entries) to avoid raising alert on bulk deletion. However, the best among options is to modify logs selectively.
What should I do if I get this CEH 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 CEH 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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