When installing outdoors, lightning protection should be considered. Especially if you live in a lightning prone cities.



When installing an Outdoor Antenna with an Indoor Hotspot.





Here is an example of surge lightning surge protector you could purchase to protect your system. 


 https://www.infinitecables.com/antenna-cables-and-accessories/lightning-surge-protectors/n-type-lightning-surge-protector-male-female-3ghz/




Here are some references from The Thinks network on Lightning protection.


https://www.thethingsnetwork.org/docs/gateways/lightning-protection.html