• Vikas Jain
• Rajesh Pokhriyal
• Rajesh Patil

A denial of service (DoS) attack is any attack that prevents a legitimate user from accessing a network resource. A distributed denial of service (DDoS) attack is one that uses numerous network resources as the source of the specific attack vector. The use of multiple resources is primarily intended as a method to amplify the capabilities of a single attacker, but it can also help to conceal the identity of an attacker and complicate mitigation efforts. Most DDoS attacks leverage a "botnet", which is a network of Internet connected computer systems centrally controlled by an attacker. Botnets can range in size from a handful of systems to tens of millions. Most botnets use compromised computer resources without the knowledge of the owner.

DDoS, botnet, Mitigation, Smokescreen, extortion, ISP, CDN

"DDoS Attacks & Mitigation Strategies ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.497-499, November-2018, Available :http://www.jetir.org/papers/JETIR1811972.pdf

"DDoS Attacks & Mitigation Strategies ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp497-499, November-2018, Available at : http://www.jetir.org/papers/JETIR1811972.pdf