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In this paper we propose a dynamically invoked service based access control (SBAC) model to efficiently deal with the distributed denial of service (DDoS) attacks. The main idea of the SBAC is based on the observation that if the routers have information about the services that are running on the end host and can identify the upper layer traffic from the IP packet payload, then it becomes easy to...
Secure private networking over the Internet is difficult especially when trying to form a new network with private servers and hosts that belong to different administrative domains. Although such form of private network is useful as a closed group communication environment, simply applying existing VPN technologies is not sufficient. Not to mention common problems such as NAT and firewall traversal,...
Because of the growing complexity of networks and the difficult task of security policy enforcement, system administrators need simple and powerful security management tools. This paper presents a network security management tool that allows policy specification and administration of network security components such as firewall. The tool consists of four main modules. First module is considered the...
This paper describes a forensic logging system that collects fine-grained evidence from target servers and networks. For the logging system, we developed a TCSEC-B1 level secure operating system and a dedicated network processor that collects network traffic. The logging system is also capable of protecting servers from malicious attacks as well as allowing security managers to obtain forensic evidences...
Multicasting has not been widely adopted until now, due to lack of receiver or end user (EU) access control. We have developed the Internet group management protocol with access control (IGMP-AC), an extended version of IGMPv3, which provides EU access control by incorporating the AAA framework into the existing multicast service model. Furthermore, IGMP-AC works as an extensible authentication protocol...
With the advent of various access technologies and increasing number of applications, a set of challenges concerning efficient delivery of ubiquitous services to heterogeneous users and devices have been posed. One of the important challenges is to integrate quality of service (QoS), security and mobility support in heterogeneous networks. To facilitate the interworking of these mechanisms we propose...
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