Category: Raspberry Pi
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How to SSH to a Raspberry Pi on 4G
The reason you can’t just connect directly to a Pi (or other device) directly when that device is connected by 3G/4G is because network operators run something called Carrier Grade NAT, or CG-NAT. This has the effect of preventing all inbound connections to your Pi, and only allowing outbound connections. But fortunately, there’s a relatively…