Wireless Communication Security

9Depth Analysis On DoS & DDoS Attacks

Gaurav Nayak¹, Anjana Mishra¹*, Uditman Samal¹ and Brojo Kishore Mishra²

¹Department of Computer Science and Information Technology C.V. Raman Global University, Bhubaneswar, Odisha, India

²GIET University, Gunupur, Odisha, India

Abstract

Denial of Service (DoS) attacks are some of the most expensive and threatening cyberattacks that exist on the internet. Their main aim is to restrict the users/ victims’ access to a specific resource. This chapter comprises all ideas, classification, and solutions to a DoS attack. DoS compromises the availability goal of the CIA triad [16]. Here, DoS attacks are classified into the network and attacker behavior like TCP SYN, which is network-based, whereas a UDP attack is bandwidth-based. Distributed Denial of Service (DDoS) is the revamped and advanced version of DoS which uses multiple sources/zombies/agents to carry out the attack. Zombies/ Agents are the compromised computers that attackers use to attack another computer. Viruses, worms, and Botnet are the main reasons for DDoS attacks. Due to DoS attacks, there is a threat to major new technologies such as VANET, IoT, etc., which are not yet fully developed. To avoid DoS attacks users must install regular security patches, antivirus, and anti-trojan software and also run firewalls. Post-Attack Forensics is the type of countermeasure in which a pattern of the traffic of a previous DDoS attack is collected to identify and block the same kind of attack. ...