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SSCP Practice Question: An analyst runs the netstat command on a web…

Exhibit

Refer to the exhibit.
netstat -an | grep :80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 10.0.1.25:80 192.168.1.10:54321 ESTABLISHED
tcp 0 0 10.0.1.25:80 10.0.2.50:44350 ESTABLISHED
tcp 0 0 10.0.1.25:80 203.0.113.5:8080 ESTABLISHED

An analyst runs the netstat command on a web server. Based on the output, which connection is the MOST suspicious?

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

The connection from 203.0.113.5:8080

203.0.113.5 is from the documentation IP range (RFC 5737), which should not appear in real network traffic. This indicates potential spoofing or malicious activity. Options B and C are internal private IPs, which are expected. Option D is the normal HTTP listening service.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • The connection from 203.0.113.5:8080

    Why this is correct

    Correct. The external IP from the documentation range connecting on port 8080 is unusual and potentially malicious, suggesting proxy or tunneling activity.

  • The connection from 192.168.1.10:54321

    Why it's wrong here

    Incorrect. 192.168.1.10 is a private IP with a high ephemeral port, which is normal for a client connection.

  • The connection from 10.0.2.50:44350

    Why it's wrong here

    Incorrect. 10.0.2.50 is internal and port 44350 is high, typical for client connections.

  • The listening on 0.0.0.0:80

    Why it's wrong here

    Incorrect. Listening on port 80 is standard for a web server and not suspicious.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This SSCP practice question is part of Courseiva's free ISC2 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 SSCP exam.