A desktop network troubleshooting utility built with Python and tkinter. No third-party dependencies — runs on any machine with Python 3.8+ installed.
Built by a Senior Service Desk Analyst for real-world IT troubleshooting workflows.
| Tool | Description |
|---|---|
| Ping | Sends 4 packets to the target, reports reply times and packet loss |
| Traceroute | Maps every hop to the destination, flags timeouts in orange |
| DNS Lookup | Resolves IPv4 and IPv6 addresses, attempts reverse lookup |
| Port Check | Tests a specific port and quick-scans 5 common ports automatically |
| My IP Info | Shows local IP, hostname, default gateway, and DNS servers |
| Run All | Runs all five diagnostics in sequence with one click |
| Tool | Description |
|---|---|
| Flush DNS | Clears the local DNS cache (ipconfig /flushdns) |
| Release / Renew | Forces a fresh IP from DHCP (ipconfig /release + /renew) |
| Reset Winsock | Resets the Winsock catalogue (netsh winsock reset) |
| Reset IP Stack | Rebuilds the TCP/IP stack (netsh int ip reset) |
| Reset All | Runs all fix commands in sequence |
Fix commands require Administrator privileges. Right-click your terminal and select Run as Administrator before launching the script.
git clone https://github.com/Tessie27/network-diagnostics-tool
cd network-diagnostics-tool
python network_diagnostics.py- Python 3.8+
- No pip installs required — uses standard library only (
tkinter,socket,subprocess)
- Enter a hostname or IP in the Target field (e.g.
google.com,8.8.8.8,192.168.1.1) - Set a port number if using Port Check (default: 80)
- Click Run All for a full diagnostic, or use individual buttons
- Use the Fixes row for common remediation steps
| Scenario | Target |
|---|---|
| Test internet connectivity | 8.8.8.8 |
| Test DNS resolution | google.com |
| Test local gateway | 192.168.1.1 |
| Test internal server | hostname or internal IP |
| Colour | Meaning |
|---|---|
| Green | Success / open / reachable |
| Orange | Warning / timeout / filtered |
| Red | Error / failure / closed |
| Blue | Labels and section headers |
| Grey | Informational output |
network-diagnostics-tool/
network_diagnostics.py Main application
web.png App icon (place in same folder)
README.md
- Export results to text file
- Save favourite targets
- Wi-Fi signal strength display
- Scheduled ping monitoring with alerts
MIT