The 6GHz Black Hole: Troubleshooting SSH Failures Across WiFi Bands
· 3 min read
Have you ever had a service that works perfectly on localhost but acts like it doesn't exist to the rest of your network? We recently spent an afternoon debugging a Mac Mini M4 that refused to accept SSH connections, despite every local check saying "All Systems Go."
The culprit wasn't a firewall or a wrong config, it was the invisible wall between 5GHz and 6GHz WiFi bands.