Thanks, two questions:

1. Does this run as part of the strfry executable? Or as a separate process?

2. Is there a way to allow-list kinds? My use case only needs a short list of custom kind numbers and I want to block everything else (special purpose relay) 

 Its a separate process that strfry spawns when you configure it in settings

I don’t have kind whitelist yet but would be trivial 

 That’s OK, I think strfry may just have that capability baked in. In any case, PoW is more important.