title: Prevent firebird .GDB database to be opened
body: <p>I have a firebird database in format .GDB.</p>
  
  <p>If I setup a interbase server and I open the .GDB with (for ex. IB Expert) with the default password I can open the Database.</p>
  
  <p>So I'd like to prevent the database to be opened by other softwares how could I do it?</p>
  
  <p>with "gsec.exe" I can add and modify users, but this doesn't give me a tool to prevent a database to be opened by a new firebird instance.</p>