[tryton] How to connect to the remote server tryton ?

[imen laalai]

Hello, i configure my server like this:
[database] 
uri = postgresql://gnuhealth:password@adress_of_my_server/ 
 path = /home/gnuhealth/attach  
[jsonrpc]
    listen = *:8000 
data = /home/gnuhealth/gnuhealth/server/tryton 
 [session]   
super_pwd = vpxI0qPULzoMU
But when i enter the connection parameters of my server in tryton's login 
window and i try to connect to the remote server, it show me the following 
error:
error connection: bad username and password .
     Please help me thanks in advance