Subject About security DB backup
Author Jorge Andres Brugger says:

Under the Firebird 2.5 server, back up the security database. Here, use the SYSDBA password for the v.2.5 installation:
  gbak -user sysdba -pas masterkey -b {host/path}security2.fdb security2.fbk
but gbak output is:

gbak: ERROR:no permission for direct access to security database security2.fdb
gbak:Exiting before completion due to errors

The howto should be fixed.

Could you please tell me how to backup the 2.5 Security DB?