Any advice on good communities or sources of (reliable) information on alternative firmwares and pen testing type tools?
IRC is still alive and there is bunch of communities around that are a bit more lax, probably because they're half-dead compared to what they used to be. Today probabably Libera.chat would be the best introduction if you haven't touched IRC before.
alt Hacker News
IRC is still alive and there is bunch of communities around that are a bit more lax, probably because they're half-dead compared to what they used to be. Today probabably Libera.chat would be the best introduction if you haven't touched IRC before.