Vulnerability scanning tools (Nessus, OpenVAS) in Cybersecurity - Mini Project: Build & Apply

Understanding Vulnerability Scanning Tools: Nessus and OpenVAS

📖 Scenario: You are a cybersecurity analyst preparing to scan a small network for security weaknesses. You want to organize information about two popular vulnerability scanning tools: Nessus and OpenVAS.

🎯 Goal: Create a simple Python dictionary to store details about Nessus and OpenVAS, add a configuration setting for scan depth, filter tools based on scan depth capability, and finalize the data structure for reporting.

📋 What You'll Learn

Create a dictionary named tools with exact entries for Nessus and OpenVAS

Add a variable min_scan_depth to set the minimum scan depth threshold

Use a dictionary comprehension to select tools with scan depth greater than or equal to min_scan_depth

Add a final key selected_tools to the dictionary with the filtered tools

💡 Why This Matters

🌍 Real World

Cybersecurity analysts use vulnerability scanning tools like Nessus and OpenVAS to find security weaknesses in networks. Organizing tool information helps in choosing the right scanner for specific needs.

💼 Career

Understanding how to manage and filter tool data is useful for cybersecurity roles that involve vulnerability assessment and tool selection.

1

Create the initial tools dictionary

Create a dictionary called tools with these exact entries: 'Nessus': {'scan_depth': 5, 'license': 'commercial'} and 'OpenVAS': {'scan_depth': 4, 'license': 'open-source'}.

Cybersecurity

# Create the tools dictionary with Nessus and OpenVAS details
# Your code here

Need a hint?

Use a dictionary with tool names as keys and another dictionary for their properties.

2

Add a minimum scan depth configuration

Add a variable called min_scan_depth and set it to 5 to represent the minimum scan depth required for selecting tools.

Cybersecurity

tools = {
    'Nessus': {'scan_depth': 5, 'license': 'commercial'},
    'OpenVAS': {'scan_depth': 4, 'license': 'open-source'}
}
# Set the minimum scan depth threshold
# Your code here

Need a hint?

Just create a variable with the exact name and value.

3

Filter tools by minimum scan depth

Create a dictionary called filtered_tools using dictionary comprehension that includes only tools from tools where the scan_depth is greater than or equal to min_scan_depth.

Cybersecurity

tools = {
    'Nessus': {'scan_depth': 5, 'license': 'commercial'},
    'OpenVAS': {'scan_depth': 4, 'license': 'open-source'}
}
min_scan_depth = 5
# Filter tools by scan depth
# Your code here

Need a hint?

Use dictionary comprehension with for name, info in tools.items() and a condition on info['scan_depth'].

4

Add filtered tools to the main dictionary

Add a new key 'selected_tools' to the tools dictionary and assign it the value of filtered_tools.

Cybersecurity

tools = {
    'Nessus': {'scan_depth': 5, 'license': 'commercial'},
    'OpenVAS': {'scan_depth': 4, 'license': 'open-source'}
}
min_scan_depth = 5
filtered_tools = {name: info for name, info in tools.items() if info['scan_depth'] >= min_scan_depth}
# Add selected_tools key to tools dictionary
# Your code here

Need a hint?

Assign filtered_tools to tools['selected_tools'].