# type  database        user         address          type
local   all             postgres                      peer  # postgres user
local   all             fred                          peer  # fred should be able to get in w/o password
host    all             all          127.0.0.1/32     peer  # ipv6 local connections
host    all             all          ::1/128          peer  # ipv4 local
host    all             all          0.0.0.0/0        md5   # authenticated from any host