QuadraticSolver/zmap.py at main · Shubham18024/QuadraticSolver · GitHub

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"""
Practical 3: Using Nmap / Zenmap to Analyze a Remote Machine (Ubuntu Linux)

Objective:
To perform network scanning and analysis of a remote machine using Nmap (CLI)
and optionally Zenmap (GUI), and understand open ports, services, and security exposure.

------------------------------------------------------------
🔧 PART 1: INSTALLATION (Ubuntu Linux)
------------------------------------------------------------

Step 1: Update system packages
Command:
    sudo apt update

Explanation:
- 'sudo' → run as administrator
- 'apt update' → refresh package list

Step 2: Install Nmap
Command:
    sudo apt install nmap

Step 3 (Optional): Install Zenmap (GUI version)
Command:
    sudo apt install zenmap

Note:
- Zenmap may not be available in latest Ubuntu repos.
- If not available, download from official site:
    https://nmap.org/download.html

------------------------------------------------------------
🔍 PART 2: BASIC NMAP USAGE
------------------------------------------------------------

Step 1: Check installation
Command:
    nmap --version

Step 2: Scan a target website or IP
Example:
    nmap scanme.nmap.org

OR:
    nmap <IP_ADDRESS>

What happens:
- Nmap scans the target
- Finds open ports
- Identifies services running

------------------------------------------------------------
📊 PART 3: IMPORTANT SCAN TYPES
------------------------------------------------------------

1. Basic Scan:
    nmap <target>

2. Verbose Scan:
    nmap -v <target>

   Explanation:
   - '-v' → shows detailed output

3. Service Version Detection:
    nmap -sV <target>

   Explanation:
   - '-sV' → detects software/service versions

4. OS Detection:
    sudo nmap -O <target>

   Explanation:
   - '-O' → guesses operating system

5. Aggressive Scan:
    sudo nmap -A <target>

   Includes:
   - OS detection
   - Version detection
   - Script scanning

6. Scan Specific Ports:
    nmap -p 80,443 <target>

7. Full Port Scan:
    nmap -p- <target>

------------------------------------------------------------
🖥️ PART 4: USING ZENMAP (GUI)
------------------------------------------------------------

Step 1: Open Zenmap
Command:
    zenmap

Step 2:
- Enter target (IP or domain)
- Choose profile (e.g., "Intense Scan")
- Click "Scan"

Zenmap provides:
- Visual output
- Topology view
- Easy interpretation

------------------------------------------------------------
📄 PART 5: SAMPLE OUTPUT INTERPRETATION
------------------------------------------------------------

Example Output:
PORT    STATE  SERVICE
22/tcp  open   ssh
80/tcp  open   http
443/tcp open   https

Meaning:
- PORT → communication endpoint
- STATE → open/closed/filtered
- SERVICE → application running

Example:
- 22 → SSH (remote login)
- 80 → HTTP (web server)
- 443 → HTTPS (secure web)

------------------------------------------------------------
⚠️ ETHICAL CONSIDERATION
------------------------------------------------------------

- Only scan systems you own OR have permission to test
- Unauthorized scanning may be illegal

------------------------------------------------------------
📝 PART 6: HOW TO PRESENT TO TEACHER
------------------------------------------------------------

1. Write Aim:
   "To analyze a remote machine using Nmap."

2. Include Commands Used:
   Example:
   - nmap scanme.nmap.org
   - nmap -sV scanme.nmap.org

3. Attach Screenshots:
   - Terminal output
   - Zenmap GUI (optional)

4. Explain Results:
   - List open ports
   - Explain services

5. Conclusion:
   Example:
   "Nmap helps identify open ports and services, which is useful
    for network security and vulnerability assessment."

------------------------------------------------------------
🎯 BONUS TIPS (FOR EXTRA MARKS)
------------------------------------------------------------

- Use:
    nmap -oN output.txt <target>

  → saves output in file

- Explain TCP vs UDP briefly
- Mention cybersecurity relevance

------------------------------------------------------------
✅ FINAL SUMMARY
------------------------------------------------------------

Nmap is a powerful network scanning tool used for:
- Port scanning
- Service detection
- Security analysis

Zenmap provides a graphical interface for easier understanding.

------------------------------------------------------------
END OF PRACTICAL
------------------------------------------------------------
"""