I am trying to deploy my website and wcf runs in my localhost...if i login i.e use db i am gettin this error...Any idea wht the pblm would be ?

Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.