Error establishing a database connection

Otherwise you could grant permissions over databases accessing the nas with the putty shell....

Here's my 'config.inc.php' :
/* Servers configuration */
$i = 0;

/* Server: localhost [1] */
$i++;
$cfg['Servers'][$i]['verbose'] = '';
$cfg['Servers'][$i]['host'] = 'localhost';
$cfg['Servers'][$i]['port'] = '';
$cfg['Servers'][$i]['socket'] = '/var/run/mysqld/mysqld.sock';
$cfg['Servers'][$i]['connect_type'] = 'socket';
$cfg['Servers'][$i]['extension'] = 'mysqli';
$cfg['Servers'][$i]['auth_type'] = 'config';
$cfg['Servers'][$i]['user'] = 'root';
$cfg['Servers'][$i]['password'] = 'put here your password';

/* End of servers configuration */

$cfg['DefaultLang'] = 'en-utf-8';
$cfg['ServerDefault'] = 1;
$cfg['UploadDir'] = '';
$cfg['SaveDir'] = '';

Here's my 'my.cnf' file :

[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock

[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0

[mysqld]
#
# * Basic Settings
#
user = admin
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
language = /usr/share/mysql/english
skip-external-locking
skip-name-resolve
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
# bind-address = 127.0.0.1
skip-networking
innodb_buffer_pool_size = 6M
key_buffer_size = 16k
myisam_sort_buffer_size = 16k
max_connection = 20
#
# * Fine Tuning
#
key_buffer = 16k
max_allowed_packet = 16M
thread_stack = 128K
#
# * Query Cache Configuration
#
query_cache_limit = 1048576
query_cache_size = 32768
query_cache_type = 1
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
#log = /var/log/mysql.log
#log = /var/log/mysql/mysql.log
#
# The following can be used as easy to replay backup logs or for replication.
#server-id = 1
#log-bin = /var/log/mysql/mysql-bin.log
# See /etc/mysql/debian-log-rotate.conf for the number of files kept.
max_binlog_size = 16384
#binlog-do-db = include_database_name
#binlog-ignore-db = include_database_name
skip-bdb
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!

[mysqldump]
quick
quote-names
max_allowed_packet = 16M

[mysql]
#no-auto-rehash # faster start of mysql but no tab completition

[isamchk]
key_buffer = 16M