

8 GB RAM or more. OS installed either to SSD, or a HDD that does not store service data (for performance). a modern CPU with at least 4 cores. modern means it has at least AES and AVX2 instruction sets to do math quickly, but probably you can just pick one made in the last 10 years, with less years generally meaning better energy efficiency.
what kind of services do you want to host on it? initial plans, perhaps longer term plans?
you should be able to do that from the web interface, and it will apply to any apps because your server does the filtering.
fyi, some are already blocking lemmy.ml too. I’m not yet sure if I want to go that far, but I’m getting tired of their china apologism. and this community is also on ml, soo…