pg_hba.conf ---> problem??

I use Debian. In one example (with user postgres) i obtain success:

sh-3.00$ psql -l
Listado de base de datos
Nombre | Dueño | Codificación
-----------+----------+--------------
mydb | postgres | SQL_ASCII
template0 | postgres | SQL_ASCII
template1 | postgres | SQL_ASCII
test | postgres | SQL_ASCII
(4 filas)

The problem appears when i use tora or pgaccess, i can't connect to db.
The message is:

  Unable to connect to the database.
  FATAL: IDENT authentication failed for user "portgres"

Who/where is the possible problem?

I try:
   user: postgres
   pass: "mypass"
   port: 5432
   localhost
   db: mydb

Any answer?