system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] When you put up a planetary shield, what is the difference between the Hoth kind (that ships can pass through), and the Scarif kind (that acts like a brick wall)?
gpt
I think the one of Hoth was only a partial shield, like a large plate that covered Echo Base.  That’s why the Empire landed ground troops and marched in. 

Alternatively, it was like the Gungan shield where slow moving walkers could penetrate but not high speed objects like missiles or fighters.