In addition to the advice already offered, and assuming you find gsec on
the database server, you may find the gsec manual helpful:


Online HTML:
http://www.firebirdsql.org/file/documentation/reference_manuals/user_manuals/html/gsec.html

PDF:
http://www.firebirdsql.org/file/documentation/reference_manuals/user_manuals/Firebird-gsec.pdf

These manuals are in English.

HTH

Cheers,
Norm.

--
Norman Dunbar
Dunbar IT Consultants Ltd

Registered address:
27a Lidget Hill
Pudsey
West Yorkshire
United Kingdom
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Company Number: 05132767