To improve throughput of grid data servers under heavy loads or under denial of service attacks, it is important to service requests differentially, giving preference to ongoing or imminent client requests. We show how such features can be efficiently implemented on a gateway that controls access to a pool of servers. We present performance results for a prototype system based on a dual-ported ...

ABSTRACT : With the rapid development of information technology, internet has affect the people in all aspects such as public utilities, telecommunication, financial transaction and defense system, all depends on information technology and their security. The widespread deployment of new technologies had maximized the use of internet to a great extent. But at the same time, the potential attack...

-----------------------------------------------------------------------ABSTRACT-----------------------------------------------------In a denial-of-service (DoS) attack, an attacker attempts to prevent legitimate users from accessing information or services. By targeting your computer and its network connection, or the computers and network of the sites you are trying to use, an attacker may be ...

We propose a logic-based method to protect network nodes or web sites from Denial of Service (DoS) attacks. This method is based upon Logical Fibering. Queries to the node are stored inside the fiber and decisions whether a new query should be accepted or not are taken on an empirical basis. The respective base space consists of the incoming information whereas the fiber itself describes the un...

We investigate resilient control strategies for linear systems under Denial-of-Service (DoS) attacks. By DoS attacks we mean interruptions of communication on measurement (sensor-to-controller) and control (controller-to-actuator) channels carried out by an intelligent adversary. We characterize the duration of these interruptions under which stability of the closed-loop system is preserved. Th...