Cisco recommends to use lightning arrestors for its LoRaWAN gateway (ACC-LA-G-TM-TF). I think that’s not a bad idea and I already thought about possibilities to protect my PoE switch at home since it powers an IC880+RPi over a PoE-microsUSB Adapter.
There are solutions available for antenna port as well as for Ethernet ports.
Maybe we should consider something like this for our OpenIoT gateways? How is that done @Funkfeuer or @HamRadios?
both types are in use.
With Amateurfunk it’s mainly the variant for HF (similar types to your post) while Funkfeuer uses mainly Ethernet based solutions (eg. https://geizhals.at/ubiquiti-surge-protector-gen-2-eth-sp-g2-a1785709.html).
For the Gateway in Prottes we specifically used this part: https://www.fts-hennig.at/antennen/blitzschutz/cat6-blitzschutz.html
Some devices in Funkfeuer handle over-voltage inside the antenna or power supply. At minimum they then have a grounding cable. (Not all devices with grounding have overvoltage compensation support though)