Nessus vs Nmap

The vulnerability scanner that makes you feel both secure and slightly paranoid about your entire network meets the network detective that knows all your ports are open, even when you think they're not. Here's our take.

Nessus

Nice Pick

The vulnerability scanner that makes you feel both secure and slightly paranoid about your entire network.

Pros

• Extensive vulnerability database with frequent updates
• Detailed reports with actionable remediation steps
• Supports compliance scanning for standards like PCI DSS and HIPAA

Cons

• Can be resource-intensive and slow on large networks
• Licensing costs add up quickly for enterprise use

Nmap

The network detective that knows all your ports are open, even when you think they're not.

Pros

• Extensive scanning techniques for network discovery and security auditing
• Powerful NSE (Nmap Scripting Engine) for automated vulnerability detection
• Cross-platform support and active community with regular updates

Cons

• Steep learning curve for advanced features and scripting
• Can be flagged as malicious activity if used without proper authorization

The Verdict

Use Nessus if: You want extensive vulnerability database with frequent updates and can live with can be resource-intensive and slow on large networks.

Use Nmap if: You prioritize extensive scanning techniques for network discovery and security auditing over what Nessus offers.

The Bottom Line

Nessus wins

The vulnerability scanner that makes you feel both secure and slightly paranoid about your entire network.