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The 6GHz Black Hole: Troubleshooting SSH Failures Across WiFi Bands

· 3 min read
Kobbi Gal
I like to pick things apart and see how they work inside

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.