How to prevent a user from connecting to databases?

Question

PostgreSQL

Hello everyone
Please tell me how to "prohibit" the user from connecting to databases via tcp? (in other words, allow the user to connect only locally)
I know that this is done through pg_hba, but I can’t find mmm how to make an exception,
I hope that I correctly formulated the question

Answer 1

Here: https://www.postgresql.org/docs/9.1/static/auth-pg...
Reject everything except local.