NDLI: Protection in flexible operating system architectures

Content Provider	ACM Digital Library
Author	Rippert, Christophe
Abstract	This paper presents our work concerning flexibility and protection in operating system kernels. In most existing operating systems, security is enforced at the price of flexibility by imposing protection models on the system programmer when building his system. We prove that flexibility can be preserved by separating the management of the protection policy from the tools used to enforce it. We present the secure software framework we have implemented in the THINK architecture to manage protection policies and guarantee they are carried out as specified. We then detail the elementary protection tools provided to the programmer so he can protect his system against unauthorized accesses and denial of service attacks. These tools are implemented in a policy-neutral way so as to guarantee their flexibility. Finally we validate our results by evaluating the flexibility of the protection provided on selected examples of dynamic modification of the protection policy.
Starting Page	8
Ending Page	18
Page Count	11
File Format	PDF
ISSN	01635980
DOI	10.1145/958965.958966
Journal	ACM SIGOPS Operating Systems Review (OPSR)
Volume Number	37
Issue Number	4
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1975-04-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Information Systems

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Protection in flexible operating system architectures