How can I diagnose network issues causing connection timeout errors in MongoDB Compass?

Use tools like `ping`, `traceroute`, or `telnet` to diagnose network problems. `ping` tests basic connectivity, while `traceroute` identifies the path of the connection and any potential bottlenecks. `telnet` can test if you can reach the server on the MongoDB port. Examine network traffic with tools like Wireshark if you need detailed network monitoring.