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Devops InfrastructureAlternative to ShodanAlternative to QualysAlternative to Nessus

Nmap

The free and open-source network scanner for vulnerability scanning and discovery.

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LicenseGPL-2.0
GitHub stars11.5k
Last commit1 weeks ago
Tags6 topics
CNetwork DiscoveryVulnerability ScannerPort ScannerCppSecurity
Overview

Why consider Nmap?

Nmap (Network Mapper) is a free and open-source utility for network discovery and vulnerability auditing. It scans networks to identify live hosts, open ports, OS versions, and hardware firewalls.

Guided learning

Learn Nmap by building

Practical setup notes, real use cases, and copy-ready examples in one focused guide.

1 min read 2 sections
In this guide2 sections

Overview of Nmap

Nmap uses raw IP packets in novel ways to determine what hosts are available on the network and what services they are offering.

Quickstart

bash
1# Scan a host for open ports and OS version
2nmap -A -T4 scanme.nmap.org

Nmap is licensed under the GNU General Public License v2.0 (GPL-2.0).

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Nmap FAQs

Nmap is listed as a Devops Infrastructure tool on TiloBox. Review the overview, features, and official documentation on this page to decide whether it solves your specific workflow.

Start with the project's GitHub repository and official website for supported installation and deployment instructions. Test the setup with representative data or a small project before rolling it out more widely.

Nmap is listed under the GPL-2.0 license. Read the complete license text and the project's notices before using, modifying, or distributing the software.

Production readiness depends on your requirements. Review maintenance activity, security practices, documentation, backup and upgrade procedures, and compatibility with your stack; then validate it in a non-production environment.

Nmap is listed as an alternative to Shodan. Compare the core workflow, deployment model, integrations, and licensing against your must-have requirements before switching.