11,175 research outputs found
A trustworthy mobile agent infrastructure for network management
Despite several advantages inherent in mobile-agent-based approaches to network management as compared to traditional SNMP-based approaches, industry is reluctant to adopt the mobile agent paradigm as a replacement for the existing manager-agent model; the management community requires an evolutionary, rather than a revolutionary, use of mobile agents. Furthermore, security for distributed management is a major concern; agent-based management systems inherit the security risks of mobile agents. We have developed a Java-based mobile agent infrastructure for network management that enables the safe integration of mobile agents with the SNMP protocol. The security of the system has been evaluated under agent to agent-platform and agent to agent attacks and has proved trustworthy in the performance of network management tasks
A secure, constraint-aware role-based access control interoperation framework
With the growing needs for and the benefits of sharing resources and information among different organizations, an interoperation framework that automatically integrates policies to facilitate such cross-domain sharing in a secure way is becoming increasingly important. To avoid security breaches, such policies must enforce the policy constraints of the individual domains. Such constraints may include temporal constraints that limit the times when the users can access the resources, and separation of duty (SoD) constraints. Existing interoperation solutions do not address such cross-domain temporal access control and SoDs requirements. In this paper, we propose a role-based framework to facilitate secure interoperation among multiple domains by ensuring the enforcement of temporal and SoD constraints of individual domains. To support interoperation, we do not modify the internal policies, as most of the current approaches do. We present experimental results to demonstrate our proposed framework is effective and easily realizable. © 2011 IEEE
ViotSOC: Controlling Access to Dynamically Virtualized IoT Services using Service Object Capability
Virtualization of Internet of Things(IoT) is a concept of dynamically
building customized high-level IoT services which
rely on the real time data streams from low-level physical
IoT sensors. Security in IoT virtualization is challenging,
because with the growing number of available (building
block) services, the number of personalizable virtual
services grows exponentially. This paper proposes Service
Object Capability(SOC) ticket system, a decentralized access
control mechanism between servers and clients to effi-
ciently authenticate and authorize each other without using
public key cryptography. SOC supports decentralized
partial delegation of capabilities specified in each server/-
client ticket. Unlike PKI certificates, SOC’s authentication
time and handshake packet overhead stays constant regardless
of each capability’s delegation hop distance from the
root delegator. The paper compares SOC’s security bene-
fits with Kerberos and the experimental results show SOC’s
authentication incurs significantly less time packet overhead
compared against those from other mechanisms based on
RSA-PKI and ECC-PKI algorithms. SOC is as secure as,
and more efficient and suitable for IoT environments, than
existing PKIs and Kerberos
Security for Grid Services
Grid computing is concerned with the sharing and coordinated use of diverse
resources in distributed "virtual organizations." The dynamic and
multi-institutional nature of these environments introduces challenging
security issues that demand new technical approaches. In particular, one must
deal with diverse local mechanisms, support dynamic creation of services, and
enable dynamic creation of trust domains. We describe how these issues are
addressed in two generations of the Globus Toolkit. First, we review the Globus
Toolkit version 2 (GT2) approach; then, we describe new approaches developed to
support the Globus Toolkit version 3 (GT3) implementation of the Open Grid
Services Architecture, an initiative that is recasting Grid concepts within a
service oriented framework based on Web services. GT3's security implementation
uses Web services security mechanisms for credential exchange and other
purposes, and introduces a tight least-privilege model that avoids the need for
any privileged network service.Comment: 10 pages; 4 figure
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