database on webserver could not connected on local machine

Question

hi
I have database on 1and1.com
My site is working fine when I uploaded,but on my local machine it's not working.
  i have used following connection string

<connectionStrings>

    

    <add name="ConnectionStr" connectionString="Data Source=winsqlus04.1and1.com,1433;Initial Catalog=db234234324;User Id=dbo234234324;Password=*******;"/>

</connectionStrings>

Please suggest me .