> I would like to know if someone can help me with the minimum system
> requirements for the Firebird 3.0, specific for Debian distribution.
> Distribution, kernel and so on.

Current stable (buster) does have 3.0.5 in repository.

Oldstable (stretch) does come with 3.0.1 only.

For any older distribution you will have to compile from source.

I would strongly suggest to use buster distribution and install compiled
binary from repository.

Elmar