BibTeX:

@article{IJIRSTV2I8008,
     title={Identifying and Removing DDoS Attack in UMTS Network for Simless Nodes},
     author={yasmeen patel and Mr.JAGDISH PIMPLE},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={2},
     number={8},
     pages={112--116},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV2I8008.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

In this paper we consider security of internet access over the Third Generation (3G) telecommunication systems. We Consider Universal Mobile Telecommunications System (UMTS) is selected as the most popular system among 3G systems. Here we detecting and removing DDos attack in UMTS network. The study then focuses on network access security mechanism of UMTS denial of service, identity catching, and redirection as the most significant attacks against authentication mechanism. Furthermore, we provide some solutions and methods to improve and prevent these attacks in UMTS system. The Universal Mobile Telecommunication System, more commonly known as UMTS, is now the world’s leading mobile telecommunication system serving over 4 billion subscribers worldwide. UMTS has got much popularity as the earlier GSM system failed to cope up with higher data rate demands and faced some major security flaws. Although the UMTS system is able to mitigate most of those security flaws, yet it is not invincible to the new threats emerging with new and more sophisticated technologies. Many different kinds of security breaches are possible against UMTS networks. In this short technical essay, we will focus only on the Denial of Service (DoS) attacks on the UMTS access network, we replace GSM network with UMTS network because of security flaws. Distributed Denial of Service (DDoS) attacks exhaust victim’s bandwidth or services. In this paper, different types and techniques of DDoS attacks and their countermeasures are reviewed. We also discuss some traditional methods of defence such as trace back and packet filtering techniques so that readers can identify major differences between traditional and current techniques of defence against DDoS attacks. Before the discussion on countermeasures, we mention different attack types under DDoS with traditional and advanced schemes while some information on DDoS trends in the year 2012 Quarter-1 is also provided. We identify that application layer DDoS attacks possess the ability to produce greater impact on the victim as they are driven by legitimate-like traffic making it quite difficult to identify and distinguish from legitimate requests. The need of improved defence against such attacks is therefore more demanding in research. The study conducted in this paper can be helpful for readers and researchers to recognize better techniques of defence in current times against DDoS attacks and contribute with more research on the topic in the light of future challenges identified in this paper.

packet filtering, packet dropping, UMTS network, client’s nodes, time frame based technique