Symfony2 can't connect to remote database

Symfony2 can't connect to remote database

My web application (on ip 10.0.0.240) should connect to a remote database
(10.0.0.245)
parameters:
database_driver: pdo_mysql
database_host: 10.0.0.245
database_port: null
database_name: apps
database_user: apps
database_password: ******
I double check in config file i have :
doctrine:
dbal:
driver: %database_driver%
host: %database_host%
port: %database_port%
dbname: %database_name%
user: %database_user%
password: %database_password%
charset: UTF8
I took this settings from a existing application of mine working just
fine... but here I have constant error :
SQLSTATE[28000] [1045] Access denied for user 'apps'@'10.0.0.240' (using
password: YES)
If I try to connect from my local machine it works... I'v deploy my
project using capifony I'v check on current/app/confif/parameters.yml and
share/app/config/parameters.yml they are the same and they are good ...
Thanks