jdbc:postgresql://127.0.0.1:45432/mydb

username: erjik
password: xx

local all all trust
// IPv4
host all all 127.0.0.1/32 trust
// IPv6
host all all ::1/128 trust

listen_addresses = '*'

port = 5432

psql -h localhost -U erjik mydb

# TYPE  DATABASE        USER            ADDRESS                 METHOD
host    all             all             all                     md5

your-pgvm$ nc -v -l 12345
Connection from 10.0.2.2 port 12345 accepted

your-comp$ nc localhost 12345