With the rapid growth of security threats in computer networks, need for developing efficient security-warning systems is substantially increasing. Distributed denial-of-service (DDoS) and DoS attacks are still among most effective dreadful that require robust detection. In this work, we propose a new method to detect TCP DoS/DDoS attacks. Since analyzing network traffic promising approach, our...

<span lang="EN-US">Distributed denial of service (DDoS) attacks the target providers by sending a huge amount traffic to prevent legitimate users from getting service. These become more challenging in software-defined network paradigm, due separation control plane data plane. Centralized software defined networks are vulnerable DDoS that may cause failure all networks. In this work, new a...

Capabilities are being added to IP networks to support Quality of Service (QoS) guarantees. These guarantees are needed for many applications such as voice and video transmission, real-time control, etc. Little attention has been paid to making these capabilities secure; in their present form they are vulnerable to attack. The ARQoS project is examining these vulnerabilities, and ways to preven...

In this paper we present an analysis of Shaft, an example of malware used in distributed denial of service (DDoS) attacks. This relatively recent occurrence combines well-known denial of service attacks (such as TCP SYN flood, smurf, and UDP flood) with a distributed and coordinated approach to create a powerful program, capable of slowing network communications to a grinding halt. Denial of se...

Protocol-based denial-of-service attacks are currently one of the greatest threats to survivability. Since they are implemented using the very protocols used for establishing communication, they often do not require any special special privileges on the part of the attacker. Moreover, since most existing protocols were not designed to be resistant to these types of attacks, they are often very ...

Abstract—Today, botnets have become a serious threat to enterprise networks. By creation of network of bots, they launch several attacks, distributed denial of service attacks (DDoS) on networks is a sample of such attacks. Such attacks with the occupation of system resources, have proven to be an effective method of denying network services. Botnets that launch HTTP packet flood attacks agains...

This paper deals with denial of service attack. Overview of the existing attacks and methods is proposed. Classification scheme is presented for a different denial of service attacks. There is considered agent-based intrusion detection systems architecture. Considered main components and working principles for a systems of such kind.

This paper is based on the Network security situation awareness. It describes the framework designed to generate security graph. The proposed framework is easy to install and provides protection against denial of service and distributed denial of service attacks. It also displays security analysis of the sensors attached to the network

● Security is built on top of three operational aspects of computer systems: confidentiality, integrity and availability ● (Distributed) Denial of Service (DoS) is an attack on the availability of data ● The denial-of-service effect is achieved by sending messages to the target that interfere with its operation, and make it crash, reboot, freeze or do useless work ● Motivation can be both polit...