Episode 44: Network Connectivity Troubleshooting — End-to-End Checks
Troubleshooting network connectivity requires a methodical approach that spans every layer from physical cables to application responses. In this episode, we cover how to diagnose full end-to-end communication failures using a structured strategy. You’ll learn how to begin with Layer 1 cable checks, move through IP configuration and routing, and finally test DNS and application-level responses. By isolating each step in the communication chain, you can identify exactly where the problem begins.
We provide practical walkthroughs using tools like ping, traceroute, and netstat to uncover unreachable hops, dropped packets, or broken paths. This episode also explores how to test multiple hosts, confirm port availability, and avoid false assumptions caused by DNS or firewall misconfigurations. Whether you’re troubleshooting a local machine or tracking down remote access issues, these techniques form the backbone of real-world diagnostics.
