I am reading the book Beginning SQL Server for Visual Basic Developers and have a question regarding authentication. On page 175 the author states when setting up a DSN that the best method to use for authentication is SQL authentication because it provides the most secure DSN connection. Then on page 197 he states as a general rule Windows authentication mode provides the most security. He is talking about 2 separate issues? I am confused as to which method provides the best security. Thanks for your help.