Network Doctor – network troubleshooting utility

Network Doctor is a network troubleshooting utility with a terminal user interface.

The software checks network interfaces, internet connectivity, DNS, TCP, TLS, HTTP, proxy configuration and path MTU. It presents the results as a plain-English diagnosis, helping you identify whether a fault lies on the local network, along the route or with the remote service.

This is free and open source software.

Key Features

• Checks local network interfaces and internet connectivity.
• Diagnoses DNS, TCP, TLS, HTTP and HTTPS connections.
• Tests environment-configured proxy servers.
• Checks for evidence of path MTU problems without requiring root access.
• Displays pass, warning, failure, skipped and not-applicable states.
• Provides supporting evidence and targeted troubleshooting suggestions.
• Integrates with ping, dig, curl, traceroute, mtr and nmap.
• Runs multiple diagnostic tools concurrently.
• Watch mode for identifying intermittent connection problems.
• Produces structured JSON output for scripts and automation.
• Binds diagnostic traffic to a specific interface or IP address.
• Provides LAN scanning and network mapping.
• Supports copying and saving diagnostic reports.
• Runs on Linux, macOS and Windows.

Website: github.com/heymaikol/network-doctor
Support:
Developer: heymaikol
License: GNU General Public License v3.0

Network Doctor is written in Go. Learn Go with our recommended free books and free tutorials.

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