@INPROCEEDINGS {13011,
author={A. Zúquete and P. Correia and M. Rocha},
doi={},
booktitle={IFIP TC6 and TC11 Joint IFIP TC6 and TC11 Conf. on Communications and Multimedia Security - CMS},
title={A framework for enforcing user-based authorization policies on packet filter firewalls},
year={2012},
month={September},
volume={LNCS 7394},
pages={204-206} 
}