Lesson objective
Turn a basic Linux review into documented proof.
This sample is intentionally defensive and lab-focused. Use a Linux system you own or are explicitly authorized to review.
1. Record the environment
Start by documenting the system before making changes.
hostnamectl
uname -a
cat /etc/os-release
2. Check account context
Record who you are logged in as and the groups associated with the account.
whoami
id
groups
3. Review listening services
Observe what is listening locally. Do not scan other systems.
ss -tulpen
4. Capture the proof
- Screenshot or copy the command output.
- Write one observation without exaggerating.
- Write one potential risk only if the evidence supports it.
- Write one recommendation with a clear reason.
5. Explain it in plain English
Example: “The server has an SSH service listening. I verified the service locally and recorded the listening interface and port. The next step is to confirm that remote access is limited to approved sources and that key-based authentication is enforced.”