DoS and DDoS attacks are one of the most lethal attacks considered in the domain of cyber security. The prime reason behind is that it is easy to conduct such attacks with very limited tools and applications and also with very little effort. The main aim of this attack is to deny the user from the services of the machine. Users and Internet service providers (ISPs) are constantly affected by denial-of-service (DoS) attacks. This cyber threat continues to grow even with the development of new protection technologies. Developing mechanisms to detect this threat is a current challenge in network security.