What is default omnia NAT mapping and filtering type

What type of mapping and filtering is done by turris omnia? Is it configurable?
I’m asking for an answer as defined by https://datatracker.ietf.org/doc/html/rfc4787#section-5
e.g., “Endpoint-Independent Mapping” and “Address and Port-Dependent Filtering”

I think by default it only uses port filtering. But you could set up NAT rules with LUCI here: