Tuesday, January 28, 2020

Detection and Mitigation of DDOS Attack

Detection and Mitigation of DDOS Attack A Survey on Detection and Mitigation of Distributed Denial of Service attack in Named  Data Networking Sandesh Rai1*, Dr. Kalpana Sharma 2, and Dependra Dhakal 3 1Sikkim Manipal Institute of Technology, Student, Computer Science Engineering, Rangpo, Sikkim. 2Sikkim Manipal Institute of Technology, Head of Department, Professor, Computer Science Engineering, Rangpo, Sikkim 3Sikkim Manipal Institute of Technology, Assistant Professor, Computer Science Engineering, Rangpo ,Sikkim Abstract. There are various number of on-going research are taking place thats aims to provide next best Internet architecture although there are varieties of scope and maturity. This research is mainly based on to provide better security and better privacy as basic requirements of the protocol. Denial of Service Attacks which is a major issue in current Internet architecture also plays a critical issue in any new upcoming internet architecture and requires major focus for the same. The paper focus on the Interest flooding attack which is one the different type of Distributed Denial of service attack (DDOS).NDN incorporates better security features that detect and mitigate certain attack in the networks. But its resilience to the attacks has not analyzed yet. It presents the Distributed Denial of Service (DDOS) in Named Data Networking where an adversary sends out Interest packet with spoof names as an attacking packet to the NDN router. Keywords: NDN, DDOS, Content store, Pending Interest Table, Cache pollution. 1 Introduction Clearly internet has become a part of the day todays life of the people. Millions of people around the world use it to do various type of day todays task. It connect millions of people around the world via wired ,wireless, mobile or fixed computing devices and host huge amount of information(which is in the digital form) to be used by people. Internet provides information to be exchanged and has exponentially grown over time. The main ideas of the Todays internet architecture were developed in 70s.The telephone where conversation was point to point. The utilization of the Internet has dramatically changed since 70s and current internet has to adapt well with new usage model, new application and new services. To cope up with these changes, a variety number of research is taking place to design a new Internet architecture. Named Data Networking (NDN) [1] is one of the ongoing research .Its main objective is to developed a next best Internet architecture for upcoming generation. Its an instantiation of the of the Information Centric approach (ICN) or Content Centric approach (CCN) [1][2][3]. The main objective of the CCN is to provide more flexibility, security and scalability. CCN provide more security by securing the individual pieces of content rather than securing the connection. It provides more flexibility by using content name instead of using IP addresses. NDN is one of the instances of Information Centric Networking (ICN).NDN is based on the working principle of Content-Centric Networking (CCN) [3], where content instead of hosts are the main focus in the communications architecture. NDN is one of the research projects funded by the United State of National Science Foundation (NSF) which is under Future Internet Architecture (FIA) Program [3].NDN focus on the name rather than the location of th e host. In NDN every pieces of the data is digitally signed by its source producer. The signing in data allows the producer to be trusted and authenticated. Caching of the data is one of the core features of the NDN which helps to optimum use of network bandwidth use in the network . NDN provide an attractive architecture for the data distribution, anonymous communication. 1.1 Distributed Denial of service attack: As the years goes by, Distributed denial of service (DDOS) attack have become common and dangerous and it remains among the most critical threats on the current Internet. They are very difficult to detect and mitigate. Any new architecture should detect and mitigate DoS attack or at least minimum their effeteness. NDN appear to be efficient for the distribution of the content for the legitimate parties but unknown to malicious parties. Instead of using single host computer and single connection for the internet, the DDOS attack utilizes various number of host computers and various number of internet connections. The host computers for an attack are distributed across the whole wide world. The difference between a DOS attack VS a DDOS attack is that the victim host will be overloaded by thousands number of resources requests. In the attacks process, the adversary host node in the network sends request a huge number of zombie for the attack to take place. A malicious user attacks the n etwork host by requesting resources in a huge number in the form of Interest packets with spoofed names or without spoofed name. These huge numbers of Interest consumes the bandwidth of the network and exhaust a routers memory. This type of attack is known as Interest Flooding Attack (IFA) and this paper exclusively focus on this problem and their proposed countermeasures. 2 Overview of NDN Architecture Named data networking is an new and ongoing research architecture whose motivation is the architectural mixed of current internet architecture and its various usage. However the architecture design and principles are motivational derivation from the successes of todays Internet architecture [4]. The thin waist as can be seen in Figure 1 of hour glass architecture was the key service of the enormous growth of the internet by allowing both upside layer and bottom layer technologies to innovate independently. The NDN architecture contains the same hourglass shape as shown in Figure 1.2.1, but changes the thin waist by using data directly rather than its location. Figure 2.1 [4]: NDN Hourglass Architectures For communication, NDN provide two different packets i.e. Interest and Data packets. A user asks for resources by issuing Interest packet to the router in the network, which contains a name for those particular resources that identifies and verifies the desired data for the host. Different fields of a data packet [5]: 1.Signature: To verify data. 2. Key locator: To verify signature. 3. Publisher Public Key Digest: Public key hash of the producer. 4. Content name: Name of the requested data. 5 Selector: which include scope: and reserved. Figure 2.2 [6]: Packets in the NDN Architecture Any node having data that satisfies it, a Data packet is issued by the satisfied router [7], each router of NDN contains following different three data structures for Interest packet and Data packet forwarding. i) Content Store (CS): Recently used data are store. ii) Forward Information Base (FIB): Routing table of name of the data and it guides Interests toward data producers [8]. iii) Pending Interest Table (PIT): Store unsatisfied data request. It record the requested data name[8]. 3 Interest Flooding attacks By using the information and state of the Pending Interest Table (PIT), a routing of content by router is performed. In the PIT the name of requesting content is looked up for identifying its entry. The malicious node uses the state of the PIT to perform DDOS attacks. Basically there are three types of Interest Flooding attack [9]: a) Static: This type of attack attacks the infrastructure of the network and is limited and caching provides a build in solution. The interest is satisfied by the content of the cache [10]. b) Dynamically generated: Here the requested resources is dynamic and all the requested interest reaches to the content producer depleting the network bandwidth and state of the Pending Interest Table (PIT).Since the requested content is dynamic, in build cache does not serve as countermeasure for the attacks[10]. c) Non- existing: This report focus on this attack type where attacker involves non-satisfiable interest for a non-existing content in the network. These kinds of interest are not taken care by the router and are routed to the content producer depleting network bandwidth and router PIT states [11]. In all three types of attacks the malicious host uses a very large number of fake request, which are distributed in nature, An adversary host can use two features unique to NDN, namely CS and PIT, to perform DDoS attacks [12] in the router. We focus on attacks that overwhelm the PIT, which keeps record which are not fulfill by a router. The adversary host issues a large set of fake request, which are possibly distributed in nature, to generate a large number of Interest packets with spoofed name as shown in Figure 1.3.1 aiming to (1) overwhelm PIT table in routers, and (2) swamp the target content producers [13][14]. Figure 3.1 [15]: Example of Interest flooding attack Once the PIT is exceed its threshold, all incoming interests are dropped as there will no memory space available to create entries for new resourced interests. Since the names are spoofed, no Interest packets will be satisfied by the content [16]. These packets request will remain in the PIT for as much as possible, which will definitely exhaust the router memory and router resources on routers. This is the goal of Interest flooding attack. 4 Related Works Gasti et al. [17] analyzed the resilience of Named Data networking to the DDOS attacks. The paper discussed two different types of attacks with their effect and proposed two countermeasure mechanisms: a) Router Statistics and b) Push-back approaches. Afanasyev et al. [18] addressed the flooding attack. Their works explain the feasibility of the interest flooding attacks and the requirement of the effective solution. In terms of evaluation of the attack the proposed mitigation plan is complementary to Poseidon mitigation .Afanasyev et al. proposed three different mitigation algorithms: a) token bucket with per interface fairness b) satisfaction-based pushback c) satisfaction-based interest acceptance. All the three algorithms exploit their own state information to stop Interest flooding attacks. Satisfaction based pushback mechanism among three algorithms effectively detect and mitigate the attack and ensure all the interest form a legitimate user. Campagno et at. [19] Addressed the flooding attacks and proposed a mitigation algorithm called Poseidon. This algorithm is strictly used for non-existing type of interest flooding attacks. This mitigation algorithm is used for local and distributed interest flooding attacks. Dai et al. [20] addressed the flooding attacks and proposed a mitigation algorithm. The solution is based on the collaboration of the router and the content producer. Dai et al. proposed Interest traceback algorithm. The algorithm generates a spoof data packet to satisfy the interest in the PIT to trace the originators. According to the, the algorithm is not proactive, that overhead the network by sending out spoof data packet for the interest depleting the bandwidth of the network and creating traffic. The main shortcoming of this approach is that its take the long unsatisfied interest in the PIT as adversary interest and others as legit interest. So the router drops any long incoming interest packet which may be a legitimate interest. Choi et al. [21] addressed the overview of the Interest Flooding attacks for strictly non-existing content only on NDN. The paper tries to explain the effectiveness of the attack in the network and in quality of services. Karami et al. [22] addressed and provide a hybrid algorithm for the solution. The algorithm is proactive. There are two phase 1) detection 2) reaction. In detection phase the attack is detect using combination of multi objective evolutionary optimization and Radial basis function (Neural Network).In the reaction phases an adaptive mechanism for reaction is used to mitigate the attacks. 5 Analysis of survey The following table show the analysis of the all the paper and comparison related only on the project. The table is a comparison of different paper which is written by well-known publishers. The Analysis try to provide a possible research gap that is present on the paper. Table 1.Comparison of different NDN related paper SLno Title Publication Details Summary Research Gap 1 DoS DDoS in Named Data Networking P. Gasti, G. Tsudik, E. Uzun, and L. Zhang. DoS DDoS in named-data networking. Technical report, University of California. Discussed two types of attacks with their effects and potential countermeasures (Router Statistics and Push-back Mechanisms). 1. The paper only put a light on the attack and its possible countermeasures. 2 Interest flooding attack and countermeasures in Named Data Networking A. Afanasyev, P. Mahadevan, I. Moiseenko, E. Uzun, and L. Zhang. Interest flooding attack and countermeasures in Named Data Networking. In IFIP Networking. Proposed three mitigation algorithms. (token bucket with per-interface fairness, satisfaction-based Interest acceptance, and satisfaction-based pushback). 1.Improvements in token bucket with per-interface fairness, satisfaction-based Interest acceptance was less effective than satisfaction based pushback. 3 Poseidon: Mitigating interest flooding DDoS attacks in named data networking. A. Compagno, M. Conti, P. Gasti, and G. Tsudik, Poseidon: Mitigating interest flooding DDoS attacks in named data networking,Conference on Local Computer Networks. Proposed a framework, named Poseidon, for mitigation of local and distributed Interest flooding attack for non-existing contents 1.Fixed Threshold. 4 A hybrid multiobjective RBFPSO method for mitigating DoS attacks in named data networking. A. Karami and M. Guerrero-Zapata, A hybrid multiobjective RBFPSO method for mitigating DoS attacks in named data networking,Neurocomputing. Introduced an intelligent combination algorithm for the solution. 1.Investigating inter-domain DoS attacks and applying Hybrid approach. 5 Threat of DoS by interest flooding attack in content-centric networking S. Choi, K. Kim, S. Kim, and B.-H. Roh,:Threat of DoS by interest flooding attack in content-centric networking, in International Conference on Information Networking. Explain the difficulty for getting a solution flooding attacks in the PIT. 1.Analyzing DDoS attacks and their countermeasures. 6 Mitigate ddos attacks in ndn by interest traceback H. Dai, Y. Wang, J. Fan, and B. Liu. Mitigate ddos attacks in ndn by interest traceback. In NOMEN. Introduced a traceback solution where a node sends a spoof data packet to trace the host. 1. Only the request which is long is considered as malicious request. 6 Conclusion This report starts with a brief introduction of the CCN, NDN architecture and which is further followed by common and most critical attacks in todays internet. NDN mainly focuses on the data security, data privacy for the users. This report clearly represents only the starting step for mitigating DDOS attacks on the Pending Interest Table in the context of NDN. In this paper, we have explained DDOS attack and its various types namely, interest flooding attack. We have discussed current research regarding the attack, their existing solution, and try to analyze the given solution for detection and mitigation. The adversary tries to exploit interest forwarding rule to make certain interest for the packet with the never existing content name. We analyzed that the victim of the attack is host and PIT of the router. Thus a huge amount of Interest packet will reside on the PIT of the router which use and exhaust the memory of the router and computing resources of the router which will defin itely degrade the performance of the router. The NDN is the latest ongoing research topic and a new propose Internet architecture where limited research have been done for the mitigation and detection of the interest flooding attack thus there is a very much need for details analysis on the security before the architecture actually deployed. References V. Jacobson, M. Mosko, D. Smetters, and J. Garcia-Luna-Aceves.: Content- centric networking, Whitepaper, Palo Alto Research Center, pp. 2-4 (2007) V. Jacobson, D. K. Smetters, J. D. Thornton, M. F. Plass, N. H. Briggs, and R. L. Braynard,.:Networking named content,in Proceedings of the 5th International Conference on Emerging Networking Experiments and Technologies, ACM(2009) L. Zhang, D. Estrin, J. Burke, V. Jacobson, J. D. Thornton, D. K. Smetters, B. Zhang, G. Tsudik, D. Massey, C. Papadopoulos et al.: Named data networking (NDN) project, Relatorio Tecnico NDN-0001, Xerox Palo Alto Research Center-PARC( 2010) J. Pan, S. Paul, and R. Jain.: A survey of the research on future internet architectures, Communications Magazine, IEEE (2011) A. Hoque, S. O. Amin, A. Alyyan, B. Zhang, L. Zhang, and L. Wang.: NLSR: Named-data link state routing protocol,in Proceedings of the 3rd ACM SIGCOMM Workshop7Information-Centric Networking, ACM, pp. 15-20(2013) V. Jacobson, J. Burke, L. Zhang, B. Zhang, K. Claffy, D. Krioukov, C. Papadopoulos, L. Wang, E. Yeh, and P. Crowley.:Named data networking (NDN) project 2013- 2014 report,http://named-data.net, Annual Progress Report( 2014) C. Ghali, G. Tsudik, and E. Uzun.: Elements of trust in named-data networking, ACM SIGCOMM Computer Communication Review, ACM, vol. 44, no. 5, pp. 1-9 (2014) M. Aamir and S. M. A. Zaidi,.:Denial-of-service in content centric (named data) networking: A tutorial and state-of-the-art survey, Security and Communication Networks, vol. 8, no. 11, pp. 2037-2059 (2015) M. W ¨ahlisch, T. C. Schmidt, and M. Vahlenkamp.: Backscatter from the data plane threats to stability and security in information-centric networking. CoRR, abs/1205.4778 (2012) Content centric networking (CCNx) project. http://www.ccnx.org. A. Afanasyev, I. Moiseenko, and L. Zhang.: ndnSIM: NDN simulator for NS-3. Technical Report NDN-0005, 2012, University of California, Los Angeles(2012) Wang R, Jia Z, Ju L.: An Entropy-Based Distributed DDoS Detection Mechanism in Software-Defined Networking. InTrustcom/BigDataSE/ISPA, Vol. 1, pp. 310-317(2013) Kumar, K., Joshi, R.C. and Singh, K..: A distributed approach using entropy to detect DDoS attacks in ISP domain. In Signal Processing, Communications and Networking, ICSCN07. International Conference on pp. 331-337(2007) Feinstein L, Schnackenberg D, Balupari R, Kindred D. :Statistical approaches to DDoS attack detection and response. InDARPA Information Survivability Conference and Exposition, 2003. Proceedings Vol. 1, pp. 303-314(2003) Krishnan, R., Krishnaswamy, D. and Mcdysan, D.: Behavioral security threat detection strategies for data center switches and routers. In Distributed Computing Systems Workshops (ICDCSW), 2014 IEEE 34th International Conference on pp. 82-87(2014) Zhang Y.:An adaptive flow counting method for anomaly detection in SDN. InProceedings of the ninth ACM conference on Emerging networking experiments and technologies pp. 25-30(2013) P. Gasti, G. Tsudik, E. Uzun, and L. Zhang, DoS and DDoS in named data networking, in 22nd International Conference on Computer Communications and Networks (ICCCN), pp. 1-7(2013) A. Afanasyev, P. Mahadevan, I. Moiseenko, E. Uzun, and L. Zhang.:Interest flooding attack and countermeasures in named data networking, in IFIP Networking Conference, pp. 1-9(2013) A. Compagno, M. Conti, P. Gasti, and G. Tsudik,Poseidon: Mitigating interest flooding DDoS attacks in named data networking,in 38th Conference on Local Computer Networks (LCN), IEEE, pp. 630- 638(2013) H. Dai, Y. Wang, J. Fan, and B. Liu, Mitigate DDoS attacks in NDN by interest traceback, in Conference on Computer Communications Workshops.(INFOCOM WKSHPS), IEEE,pp. 381- 386(2013) S. Choi, K. Kim, S. Kim, and B.-H. Roh, Threat of DoS by interest flooding attack in content-centric networking, in International Conference on Information Networking (ICOIN), pp. 315-319(2013) A. Karami and M. Guerrero-Zapata.: A hybrid multiobjective RBFPSO method for mitigating DoS attacks in named data networking, Neurocomputing, vol. 151, pp. 1262-1282(2015)

Monday, January 20, 2020

A Theological Perspective of the Clash of Civilizations Essay examples

Introduction On more than one occasion, President George W. Bush has described the terrorist attacks of September 11, 2001, as fostering â€Å"a monumental battle of good versus evil.† In this battle, there has been no doubt in his mind (or in ours) regarding who is on the side of good and who is on the side of evil. Though some have winced at the President’s use of such absolute moral terms to portray the tragic events of that fateful day, others have applauded his courageous use of such unfashionable discourse as entirely appropriate, even suggesting that it implies the demise of the cultural scourge of postmodern moral relativism. Another important way, not entirely unrelated, of interpreting what transpired on 9/11 is to explain the attack of Islamic extremists on the United States of America as a manifestation of a â€Å"clash of civilizations.† At the center of this way of looking at these unprecedented events has been an article and book both authored by the noted Harvard professor of political science, Samuel P. In the summer 1993 edition of the journal Foreign Affairs, Huntington argued that world politics was entering a new phase after the end of the Cold War, and that tensions between civilizations, as the highest cultural groupings of people, would dominate the global scene. He explains the article’s thesis in these words. It is my hypothesis that the fundamental source of conflict in this new world will not be primarily ideological or primarily economic. The great divisions among humankind and the dominating source of conflict will be cultural. Nation states will remain the most powerful actors in world affairs, but the principal conflicts of global politics will occur between nations and groups of different ci... ...vides a basis for that blaze, that vision, and that life. Let us pray and live it out with a sincere heart with a view to God’s glory in the restoration of humankind Solzhenitsyn, â€Å"A World Split Apart,† 59, 61. and the renewal of the earth in an age of a tremendous battle between good and evil and the clash of civilizations. Lord, make me an instrument of Your peace. Where there is hatred, let me sow love. Where there is injury, pardon. Where there is doubt, faith. Where there is despair, hope. Where there is darkness, light. And where there is sadness, joy. O divine Master, grant that I may seek not so much to be consoled, as to console. To be understood, as to understand. To be loved, as to love. For it is in giving that we receive; It is in pardoning that we are pardoned; And it is in dying that we are born to eternal life. Amen.

Sunday, January 12, 2020

Geography MYP portfolio

Basically, gender inequality is an unequal treatment in terms of gender, male and female. Gender inequality is mainly – discrimination of women. So women have fewer job opportunities and they do work which is believed not to be a work for men. Long time ago women used to do the housework and look after children, and men used to work and earn money. Nowadays we can see that women are treated unequally to men in some LED countries: African countries, Pakistan, Yemen, Saudi Arabia and some other Muslim countries.But gender inequality still exists in some extent in every country in he world in main areas of the society: political, economical and sometimes in social. Main body (Discussion) Gender inequality in social area of society Mainly the service area (education, culture, healthcare, social welfare, public transport and etc. ) is included into social area. So, basically, here we can see the most unequal treatment of men and women. In all those African and Muslim countries wome n are treated unequally in this social area. In other countries (MED countries: US, Russia, Japan etc. , if there is an unequal treatment, then it mostly happens in economical and political areas. As an example of a country with unequal treatment, I will choose Pakistan. In Pakistan you can see gender inequality, for example in terms of education. In education, gender inequality means that women are not able to study and after have an education. Women just stay at home and do all the housework like washing, cooking; they also look after children, because kids are needed to help their mothers, so usually families are really big.Historically, in 1 9th century feminist-sympathetic movement communities tried to isolate women from any contact with men. On 14th of August, 1947 Pakistan was officially independent, but more than a half of Pakistani women are not independent even now. Pakistan believes that women were created only to take care of their husbands. Women's only job is to make s ure that her husband is satisfied and happy with his life. So women in Pakistan have to learn how to be a good daughter, sister and mother. Nowadays, Women are kept treating this way. They are also forbidden to go to schools.A lot of people (men) are against education for women, in Pakistan. There were so many crimes, when omen tried to kill a woman or a girl. Sometimes that happened, when a woman tried to study secretly. Gender inequality in economical area of society Economical area is a sphere of trading, exchange, producing, consuming and distribution of goods and services. Methods of producing and wealth distribution are the main factors that determine specificity of economic relations. Gender inequality in this area is not aggressive as it is in social area. We can see these inequalities in a few ways.Lets say there is a company, which is a part of secondary sector, so the employees are people who work tit machines and machinery. It means that men are more likely to work in th ose companies, as it would be a really hard work for women. So from this example, we can say that women are allowed to work there, but they don't, because its difficult for them and also they don't want to. In other companies, in primary sector, some employers prefer to hire men, because if you will have woman working on your company, then you can decrease company's productivity.Women might get pregnant, so she gets some rest (from 3 to 16 months, depends on a country), and after she'll have to look after her hillier. And men will always be there on his workplace. Gender inequality in political area of society political area is a sphere Of people's relations, which are mainly related to each other in terms of politics and government. Before one of the most worrisome issues was an unequal treatment of women in government and administrative office. Involving women in politics so much distinguished countries like Lithuania.As this country was technologically developing the people's lif estyle was changing a lot. In this process women started gaining ore stuff to do including the right to vote in presidential elections. Conclusion In social area, there are still a lot of gender inequalities, especially in poor LED countries. In Pakistan some men are even able to kill women, who are trying to get education, get a job and etc. I think that it's not right, and men and women should be equal. Equality leads to country's development and industrialization or at least helps it. In the economical area the only border for women are the requirements.Women are allowed to work, but their wage might be smaller, and the rotgut's quality might be lower, because, for example, men are better in working on the factories with all those machines. But it's not necessarily like that, and of course women can sometimes work even better than men, especially in the primary sector. In political area women doesn't really have problems, maybe only in LED countries where they are treated unequal ly to men. You can see some women politician that work in the government, even though it's rare. In my opinion, women should be equal to men, have the same opportunities, abilities and etc.

Friday, January 3, 2020

Thomas Hobbes And John Locke On Liberty - 1502 Words

In this essay, the contrasting ideas of Thomas Hobbes and John Locke on liberty will be discussed and critically analyzed. Freedom is the idea of being able to do what one wants to, however, in a society, laws are created to make us all equal. Laws apply to every one of us in a civilized democratic society, which is the common voice that keeps us living together without violating each other’s rights.- Author’s general view.7 Thomas Hobbes primarily expresses the idea of liberty using sovereignty as a model. According to him, sovereignty was established by agreement initially, but he goes on to say that sovereignty established by force incorporates the same rights and requirements of the social contract. The difference lies in the way the sovereign is retained, installed and thought of. A sovereign coming into power by universal consent is supported by the masses, as people fear each other. 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