>
> Can I use a GUI tool like IBAdmin to open security.FDB and make
> modifications to it logged in as SYSDBA? Are passwords stored in an
> encrypted format?
>
>
>

yes you can and yes they are.
There is an UDF available to encrypt the new password if you wish to do
this. Otherwise you can use the API to do it.
Take a backup of the file first and restore it to a gdb file in readiness.
If you break the real thing - there's only a reinstall to save you unless
you can stop the service and replace the file.
Alan