Ad hoc secuirty-vemula
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This document provides an overview of security issues in wireless ad-hoc networks. It discusses the properties and functions of mobile ad-hoc networks (MANETs) including availability, authentication, confidentiality, and data integrity. It classifies attacks as internal/external and active/passive. Specific attacks like wormhole and black hole are described. Solutions to these attacks include packet leashes to restrict travel distance and binding user identity to trust levels. Key management is important, using group, symmetric, and shared keys. In conclusion, more research is needed to fully address security challenges in unpredictable wireless networks.
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Security in mobile ad hoc networks
The document discusses security issues in mobile ad hoc networks (MANETs). It begins by introducing MANETs and noting their vulnerability to attacks due to lack of centralized authority. It then covers security goals, types of attacks (passive vs. active; internal vs. external), examples of passive attacks like eavesdropping and active attacks like jamming and wormholes. The document also discusses security schemes like intrusion detection and secure routing techniques. It concludes by identifying research issues around improving MANET security.
Security Issues in MANET
This presentation covers Security Issues in Mobile Adhoc Network in brief, highlighting various attacks such as Sleep Deprivation, Wormhole, Blackhole and Eavesdropping in particulars.
Flooding attack manet
The document discusses defense mechanisms against flooding attacks in mobile ad hoc networks (MANETs). It begins with broad background on networks and network security. It then discusses specific areas including MANETs and flooding attacks. The document reviews several papers from 2008-2011 on related topics. It discusses methodologies, advantages and drawbacks of approaches for detecting and preventing flooding attacks in MANETs, including using period-based mechanisms, trust-based classification of nodes, and probabilistic broadcasting. The comparative study section provides brief summaries of several papers analyzing defenses against flooding attacks in MANETs.
Security issues in manet
this ppt is useful for both b.e/b.tech students as well as for mca students. in this ppt u will find different types of security issues in manet and their countermeasures.
Study of security attacks in manet
This document discusses security attacks in mobile ad-hoc networks (MANETs). It begins by defining MANETs as decentralized wireless networks composed of mobile nodes that communicate in a peer-to-peer fashion without fixed infrastructure. It notes that MANETs are vulnerable to both passive and active attacks. Passive attacks target confidentiality by snooping data, while active attacks disrupt normal operation by modifying, injecting, or dropping packets. Several specific active attacks are described, including black hole attacks, wormhole attacks, and routing table poisoning attacks. The document aims to identify security objectives, potential threats, and vulnerabilities in order to analyze attacks on MANETs.
Wormhole attack
This Presentation introduces Wireless Ad hoc Networks and Wormhole attack on these network. For more inforrmation visit references
An ids scheme against black hole attack to secure aomdv routing in manet
In Mobile Ad hoc Network (MANET) all the nodes are freely moves in the absence of without ant
centralized coordination system. Due to that the attackers or malicious nodes are easily affected that kind
of network and responsible for the routing misbehavior. The routing is network is mandatory to deliver
data in between source and destination. In this research we work on security field in MANET and proposed
a novel security scheme against routing misbehavior through Black hole attack. The Ad hoc On demand
Multipath Routing (AOMDV) protocol is consider for routing and also to improves the routing quality as
compare to single path routing protocol. The attacker is affected all the possible paths that is selected by
sender for sending data in network. The malicious nodes are forward optimistic reply at the time of routing
by that their identification is also a complex procedure. The proposed Intrusion Detection System (IDS)
scheme is identified the attacker information through hop count mechanism. The routing information of
actual data is reached to which intermediate node and the next hop information is exist at that node is
confirm by IDS scheme. The black hole attacker node Identification (ID) is forward in network by that in
future attacker is not participating in routing procedure. The proposed security scheme detects and
provides the deterrence against routing misbehavior through malicious attack. Here we compare the
routing performance of AOMDV, Attack and IDS scheme. The performance of normal multipath routing
and proposed IDS scheme is almost equal. The attacker has degrades the whole routing performance but
observed that in presence of attacker, routing misbehavior is completely block by the proposed IDS scheme
and recovers 95 % of data as compare to normal routing.
NetSim Webinar on Network Attacks and Detection
Webinar Contents:
Why use a Network Simulator
Introduction to NetSim
Introduction to Sinkhole Attack : Attack scenario in MANET using NetSim
Intrusion Detection System: Detection mechanism in MANET using NetSim
Analyzing Metrics
Areas of R & D in MANET
Q & A
Recommended
Security in mobile ad hoc networks
The document discusses security issues in mobile ad hoc networks (MANETs). It begins by introducing MANETs and noting their vulnerability to attacks due to lack of centralized authority. It then covers security goals, types of attacks (passive vs. active; internal vs. external), examples of passive attacks like eavesdropping and active attacks like jamming and wormholes. The document also discusses security schemes like intrusion detection and secure routing techniques. It concludes by identifying research issues around improving MANET security.
Security Issues in MANET
This presentation covers Security Issues in Mobile Adhoc Network in brief, highlighting various attacks such as Sleep Deprivation, Wormhole, Blackhole and Eavesdropping in particulars.
Flooding attack manet
The document discusses defense mechanisms against flooding attacks in mobile ad hoc networks (MANETs). It begins with broad background on networks and network security. It then discusses specific areas including MANETs and flooding attacks. The document reviews several papers from 2008-2011 on related topics. It discusses methodologies, advantages and drawbacks of approaches for detecting and preventing flooding attacks in MANETs, including using period-based mechanisms, trust-based classification of nodes, and probabilistic broadcasting. The comparative study section provides brief summaries of several papers analyzing defenses against flooding attacks in MANETs.
Security issues in manet
this ppt is useful for both b.e/b.tech students as well as for mca students. in this ppt u will find different types of security issues in manet and their countermeasures.
Study of security attacks in manet
This document discusses security attacks in mobile ad-hoc networks (MANETs). It begins by defining MANETs as decentralized wireless networks composed of mobile nodes that communicate in a peer-to-peer fashion without fixed infrastructure. It notes that MANETs are vulnerable to both passive and active attacks. Passive attacks target confidentiality by snooping data, while active attacks disrupt normal operation by modifying, injecting, or dropping packets. Several specific active attacks are described, including black hole attacks, wormhole attacks, and routing table poisoning attacks. The document aims to identify security objectives, potential threats, and vulnerabilities in order to analyze attacks on MANETs.
Wormhole attack
This Presentation introduces Wireless Ad hoc Networks and Wormhole attack on these network. For more inforrmation visit references
An ids scheme against black hole attack to secure aomdv routing in manet
In Mobile Ad hoc Network (MANET) all the nodes are freely moves in the absence of without ant
centralized coordination system. Due to that the attackers or malicious nodes are easily affected that kind
of network and responsible for the routing misbehavior. The routing is network is mandatory to deliver
data in between source and destination. In this research we work on security field in MANET and proposed
a novel security scheme against routing misbehavior through Black hole attack. The Ad hoc On demand
Multipath Routing (AOMDV) protocol is consider for routing and also to improves the routing quality as
compare to single path routing protocol. The attacker is affected all the possible paths that is selected by
sender for sending data in network. The malicious nodes are forward optimistic reply at the time of routing
by that their identification is also a complex procedure. The proposed Intrusion Detection System (IDS)
scheme is identified the attacker information through hop count mechanism. The routing information of
actual data is reached to which intermediate node and the next hop information is exist at that node is
confirm by IDS scheme. The black hole attacker node Identification (ID) is forward in network by that in
future attacker is not participating in routing procedure. The proposed security scheme detects and
provides the deterrence against routing misbehavior through malicious attack. Here we compare the
routing performance of AOMDV, Attack and IDS scheme. The performance of normal multipath routing
and proposed IDS scheme is almost equal. The attacker has degrades the whole routing performance but
observed that in presence of attacker, routing misbehavior is completely block by the proposed IDS scheme
and recovers 95 % of data as compare to normal routing.
NetSim Webinar on Network Attacks and Detection
Webinar Contents:
Why use a Network Simulator
Introduction to NetSim
Introduction to Sinkhole Attack : Attack scenario in MANET using NetSim
Intrusion Detection System: Detection mechanism in MANET using NetSim
Analyzing Metrics
Areas of R & D in MANET
Q & A
Attacks on mobile ad hoc networks
This document provides an overview of mobile ad hoc networks (MANets) and security attacks against them. It discusses the following key points:
1. MANets are self-configuring, dynamic wireless networks without centralized administration or fixed infrastructure that allow nodes to connect to each other.
2. Security in MANets is challenging due to the lack of infrastructure and centralized monitoring. Common attacks target the physical, data link, network, transport, and multi-layers of the network.
3. Attacks discussed include flooding, blackhole, link spoofing, wormhole, denial of service, and traffic monitoring aimed at different layers of the network. Countermeasures are needed to strengthen MANet security.
TRUST VALUE ALGORITHM: A SECURE APPROACH AGAINST PACKET DROP ATTACK IN WIRELE...
Wireless ad-hoc networks are widely used because these are very easy to deploy. However, there are
various security issues and problems. Two most important issues are interoperability and interaction
among various security technologies which are very important to consider for configuration and
management point of view. The packet drop ratio in the wireless network is very high as well as packets
may be easily delayed by the attacker. Ii is very difficult to detect intruders, so it results into high false
positive rate. Packets may be dropped or delayed by intruders as well as external nodes in wireless
networks. Hence, there is the need of effective intrusion detection system which can detect maximum
number of intruders and the corresponding packets be forwarded through some alternate paths in the
network. In this paper we propose an alternate solution to detect the intruders/adversary with help of trust
value. It would remove the need of inbuilt IDS in the wireless networks and result into improving the
performance of WLAN.
D0961927
This document summarizes a research paper that aims to detect and prevent wormhole attacks in wireless sensor networks. It first provides background on wormhole attacks, where an attacker tunnels network traffic to another location to compromise routing. It then reviews related work detecting wormholes using cryptography, location verification, or intrusion detection. The paper proposes a system with guard nodes that collaboratively monitor links to detect compromised nodes. It describes modules for network topology establishment, attack establishment through different wormhole modes, and an elimination mechanism where guard nodes isolate attackers once malicious behaviors exceed thresholds. Simulations test the ability of this scheme to improve security against wormhole attacks in resource-constrained wireless sensor networks.
Wireless sensor networks
The document proposes a label-based secure localization scheme to defend against wormhole attacks in wireless sensor networks. It analyzes the impact of wormhole attacks on DV-Hop localization and describes a three-phase approach to label beacon and sensor nodes to identify and remove illegal connections introduced by wormholes. Simulation results show the scheme is effective at detecting wormholes and minimizing their impact on localization accuracy.
Security in wireless sensor networks
This document discusses security challenges in wireless sensor networks. It covers several topics: why security is needed in WSNs given their mission-critical applications; why security is more complicated in WSNs due to resource constraints of sensor nodes; common security requirements like confidentiality, integrity, and availability; guiding principles for securing WSNs like decentralized management and adaptive security; common attacks against WSNs at different layers of the protocol stack; and open research issues regarding cryptography, key management, secure data aggregation, and other high-level security mechanisms for WSNs.
Abdullah Mukhtar ppt
1- Mobile ad hoc networks are formed dynamically by an
autonomous system of mobile nodes that are connected
via wireless links.
2- Multihop communication- node communicate with the
help of two or more node from source to destination.
3- No existing fixed infrastructure or centralized administration –No base station.
4- Mobile nodes are free to move randomly-Network topology changes frequently
5- May Operate as standalone fashion or also can be connected to the larger internet.
6- Each node work as router
Primary Goals of Security in MANET
To assure a reliable data transfer over the communication networks and to protect the system resources a number of security services are classified in five categories:-
1-Authentication:- The process of identifying an individual , usually based on a username and password.
2- Confidentially:- Confidentiality aims at protecting the data from disclosure to unauthorized person.
Network attacks against confidentiality
* Packet capturing
Password attack
Port scanning
Dumpster Diving
Wiretapping
Phishing and Pharming
2-Non repudiation:- Integrity guarantees that a message being transferred is never corrupted.
3- Integrity:- Integrity guarantees that a message being transferred is never corrupted.
network attack against integrity
Salami attack
trust relationship attacks
Man in the middle attack
Session hijacking attacks
4- Availability:- Its ensure that data ,network resources or network services are available to legitimate user when required.
network attack against availability
Denial of services attacks
Distributed denial of services attack
SYN flood attacks and ICMP flood attacks
Electrical power attacks
Server Room environment attacks
Key management
The security in networking is in many cases dependent on proper key management.
Key management consists of various services, of which each is vital for the security
of the networking systems
* Trust model:-Its must determine how much different element in the network can trust each other.
* Cryptosystem:- Public and symmetric key mechanism can be applied .
* Key creation:- It must determine which parties are allowed to generate key to themselves.
* Key storage :- In adhoc network any network element may have to store its own key and possibly key of other element as well.
* Key distribution:- The key management service must ensure that the generated keys are securely distributed to their owners.
wormhole attacks in wireless networks
MANETs have unique characteristics like dynamic topology, wireless radio medium, limited resources and lack of centralized administration; as a result, they are vulnerable to different types of attacks in different layers of protocol stack. wormhole attack detection in wireless sensor networks
Black hole Attack Avoidance Protocol for wireless Ad-Hoc networks
A Mobile Ad-Hoc Network is a collection of mobile nodes or a temporary network set up by wireless mobile nodes moving arbitrary in the places that have no network infrastructure in such a manner that the interconnections between nodes are capable of changing on continual basis. Thus the nodes find a path to the destination node using routing protocols. However, due to security vulnerabilities of the routing protocols, wireless ad-hoc networks are unprotected to attacks of the malicious nodes. Various attacks and one of those attacks is the Black Hole Attack against network integrity absorbing all data packets in the network. Since the data packets do not reach the destination node on account of this attack, data loss will occur. Therefore, it is a severe attack that can be easily employed against routing in mobile ad hoc networks. There are lots of detection and defense mechanisms to eliminate the intruder that carry out the black hole attack. . Virtual Infrastructure achieves reliable transmission in Mobile Ad Hoc Network. Black Hole Attack is the major problem to affect the Virtual Infrastructure. In this paper, approach on analyzing and improving the security of AODV, which is one of the popular routing protocols for MANET. Our aim is to ensuring the avoidance against Black hole attack.
1705 1708
This document discusses security challenges in mobile ad hoc networks (MANETs) and reviews several secure routing protocols proposed to address these challenges. It begins by introducing MANETs and explaining that routing in MANETs is difficult due to the dynamic topology. It then discusses common security goals for routing protocols like confidentiality, integrity, and availability. Several attacks on MANET routing protocols are described, including passive attacks like eavesdropping and active attacks like wormhole and blackhole attacks. The document proceeds to review six secure routing protocols for MANETs - DSDV, SAR, SAODV, SRP, Secure AODV using RSA signatures, and TORA - and describes their approaches to providing routing security. It concludes
Protocol manet
Here given brief explanation about MANET protocol..and explain about reliable communication in a military MANET
Attacks in MANET
This document discusses security issues and attacks in mobile ad hoc networks (MANETs). It provides an introduction to MANETs and their characteristics. It outlines the general objectives of analyzing flooding attacks on MANETs and preventing such attacks for networks with high node mobility. It describes common attacks on MANETs such as flooding attacks, blackhole attacks, wormhole attacks, and Byzantine attacks. The document also discusses security mechanisms for MANETs including preventive cryptography-based approaches and reactive intrusion detection system approaches. It stresses the need for comprehensive security solutions to deal with the diverse attacks that are facilitated by the open and dynamic nature of MANETs.
Blackhole attack in Manet
Mobile Ad-Hoc Networks are most usefully in current environments. It’s required high performance, networks load and Throughput. In Mobile Ad-hoc Networks Routing is the hot topic for research. Basically two types routing protocols are work in the mobile Ad-hoc Networks: 1) Proactive and 2) Reactive. Researchers have projected different routing algorithm. Important work has been done on routing in ad hoc networks, some of the important works so far were the destination-sequence distance vector (DSDV) protocol, the temporally ordered routing protocol (TORA), dynamic source routing protocol (DSR) and ad hoc on demand routing protocol (AODV). These algorithms use Open Shortest Path First (OSPF) for find optimum route source to destination.ThesisScientist.com
Wormhole Attack
This document summarizes a research paper that proposes WRSR, a routing protocol for wireless mesh networks that is resistant to wormhole attacks. WRSR can detect and prevent routes containing wormhole links during the route discovery process. It does not require specialized hardware like GPS or synchronized clocks. WRSR uses the unit disk graph model to determine that for a path to be wormhole-free, any two-hop sub-path must have an alternate shorter sub-path. This allows WRSR to identify route requests traversing wormhole links and quarantine those routes before they can be established. The key features of WRSR are its ability to defend against hidden and Byzantine wormhole attacks without relying on extra hardware or computationally intensive cryptography.
Security issues and attacks in wireless sensor networks
Here you will find several attacks on wireless network as well as some possible way of prevention and also some applications.
Black hole attack
Black Hole Attack:
A malicious node advertises the wrong paths as good paths to the source node during the pathfinding process.
When the source selects the path including the attacker node, the traffic starts passing through the adversary node and this node starts dropping the packets selectively or in whole.
Black hole region is the entry point to a large number of harmful attacks.
Detection and prevention of wormhole attack in mobile adhoc networks
This document discusses detection and prevention of wormhole attacks in mobile ad hoc networks. A wormhole attack is a powerful attack where two or more malicious nodes collude to tunnel packets between them, emulating a shorter route and attracting traffic. This can severely disrupt network communication. The paper proposes a novel trust-based scheme to identify wormhole-creating nodes without cryptography. Extensive simulations show the scheme effectively handles colluding malicious nodes without imposing extra network conditions.
Securing WSN communication using Enhanced Adaptive Acknowledgement Protocol
This document summarizes an enhanced adaptive acknowledgement protocol for securing wireless sensor network communication. It begins by describing security challenges in WSNs like the wireless medium, hostile environments, and resource constraints. It then discusses common security attacks like black hole and grey hole attacks. Existing acknowledgement schemes like Watchdog, TWOACK, and AACK are explained along with their limitations in detecting such attacks. The document proposes an Enhanced Adaptive Acknowledgement (EAACK) scheme that uses ACK, Secure ACK, and Misbehavior Report Authentication to better detect attacks while reducing overhead. EAACK aims to securely detect black hole, grey hole, and false misbehavior reporting in wireless sensor networks.
DETECTION OF SYBIL ATTACK IN MOBILE ADHOCK NETWORKING
The document discusses a proposed system to detect Sybil attackers in a wireless network using a centralized base station without additional hardware like GPS. It aims to identify Sybil identities with accuracy even when nodes are mobile. A Sybil attacker can create multiple identities on a single device to launch coordinated attacks. The proposed system uses a Neighbor Discovery Distance algorithm and centralized authentication server to reduce packet delay and detect attackers, enabling efficient secure data transmission. It evaluates topology design, neighbor discovery, and how Sybil attacks work to spoof identities and impact networks. Simulation results showed the scheme can effectively detect static and mobile Sybil attackers.
Overview on security and privacy issues in wireless sensor networks-2014
Lecture Outlines
Why Security is Important for WSN
WSNs have many applications e.g.:
military, homeland security
assessing disaster zones
Others.
This means that such sensor networks have mission-critical tasks.
Security is crucial for such WSNs deployed in these hostile environments.
Why Security is Important for WSN
Moreover, wireless communication employed by WSN facilitates
eavesdropping and
packet injection by an adversary.
These mentioned factors require security for WSN during the design stage to ensure operation safety, secrecy of sensitive data, and privacy for people in sensor environments.
Algorithms to achieve security services
Symmetric Encryption
Asymmetric Encryption
Hash Function/Algorithm
Digital Signature
Why Security is Complex in WSN
Because of WSNs Characteristics:
Anti-jamming and physical temper proofing are impossible
greater design complexity and energy consumption
Denial-of-service (DoS) attack is difficult
Sensor node constraints
Sensor nodes are susceptible to physical capture
Deploying in hostile environment.
eavesdropping and injecting malicious message are easy
Using wireless communication
Why Security is Complex in WSN
Because of WSNs Characteristics:
maximization of security level is challenging
Resource consumption
asymmetric cryptography is often too expensive
Node constraints
centralized security solutions are big issue
no central control and constraints, e.g. small memory capacity.
Cost Issues
Overall cost of WSN should be as low as possible.
Typical Attacks to WSN
Physical Attacks
Environmental
Permanently destroy the node, e.g., crashing or stealing a node.
Attacks at the Physical Layer
Jamming: transmission of a radio signal to interfere with WSN radio frequencies.
Constant jamming: No message are able to be sent or received.
Intermittent jamming: Nodes are able to exchange messages periodically
Jamming Attack Countermeasure
Physical Attacks
Node Capture Attacks
routing functionalities
Countermeasure
tamper-proof features
Expensive solution
Self-Protection
disable device when attack detected
Attacks on Routing
Sinkhole attack
attacker tries to attract the traffic from a particular region through it
Solution:
Watchdog Nodes can start to trace the source of false routing information
Attacks on Routing
Sybil attack (Identity Spoofing)
attacker claims to have multiple identities or locations
provide wrong information for routing to launch false routing attacks
Solutions:
Misbehavior Detection.
Identity Protection
Privacy Attacks
Attempts to obtain sensitive information collected and communicated in WSNs
Eavesdropping
made easy by broadcast nature of wireless networks
Traffic analysis
used to identify sensor nodes of interest (data of interest),
WSN Privacy Issues Cont.
WSN Privacy Issues Attack
Trust and reputation in WSN
WSN Traditional Security Techniques
Cryptographic primitive
G011123539
This document reviews cryptography techniques to secure the Ad-hoc On-Demand Distance Vector (AODV) routing protocol in mobile ad-hoc networks. It discusses various types of attacks on AODV like impersonation, denial of service, eavesdropping, black hole attacks, wormhole attacks, and Sybil attacks. It then proposes using the RC6 cryptography algorithm to secure AODV by encrypting data packets and detecting and removing malicious nodes launching black hole attacks. Simulation results show that after applying RC6, the packet delivery ratio and throughput of AODV increase while delay decreases, improving the security and performance of the network under attack.
Network security
Network security refers to protecting computer networks from unauthorized access and system threats. Effective network security implements measures like firewalls, encryption, and user authentication to restrict access and ensure confidentiality, integrity, and availability of network resources. As networks and threats evolve, network security requires an adaptive, layered approach using tools like antivirus software, intrusion detection, and biometrics alongside continued software and hardware advances.
Wireless Security Needs For Enterprises
This document discusses improving wireless security for enterprise/corporate users compared to home users. It analyzes security threats like encryption attacks and outlines techniques like WEP, WPA, and WPA2. The key points are:
1) Wireless networks are vulnerable to attacks using tools like AirSnort but techniques like WPA2 with AES encryption provide stronger security.
2) Corporate networks require robust security as they contain sensitive customer data, while basic techniques like WEP may suffice for home networks.
3) The document recommends home users enable security settings and use WPA-PSK encryption to protect their wireless networks.
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Attacks on mobile ad hoc networks
This document provides an overview of mobile ad hoc networks (MANets) and security attacks against them. It discusses the following key points:
1. MANets are self-configuring, dynamic wireless networks without centralized administration or fixed infrastructure that allow nodes to connect to each other.
2. Security in MANets is challenging due to the lack of infrastructure and centralized monitoring. Common attacks target the physical, data link, network, transport, and multi-layers of the network.
3. Attacks discussed include flooding, blackhole, link spoofing, wormhole, denial of service, and traffic monitoring aimed at different layers of the network. Countermeasures are needed to strengthen MANet security.
TRUST VALUE ALGORITHM: A SECURE APPROACH AGAINST PACKET DROP ATTACK IN WIRELE...
Wireless ad-hoc networks are widely used because these are very easy to deploy. However, there are
various security issues and problems. Two most important issues are interoperability and interaction
among various security technologies which are very important to consider for configuration and
management point of view. The packet drop ratio in the wireless network is very high as well as packets
may be easily delayed by the attacker. Ii is very difficult to detect intruders, so it results into high false
positive rate. Packets may be dropped or delayed by intruders as well as external nodes in wireless
networks. Hence, there is the need of effective intrusion detection system which can detect maximum
number of intruders and the corresponding packets be forwarded through some alternate paths in the
network. In this paper we propose an alternate solution to detect the intruders/adversary with help of trust
value. It would remove the need of inbuilt IDS in the wireless networks and result into improving the
performance of WLAN.
D0961927
This document summarizes a research paper that aims to detect and prevent wormhole attacks in wireless sensor networks. It first provides background on wormhole attacks, where an attacker tunnels network traffic to another location to compromise routing. It then reviews related work detecting wormholes using cryptography, location verification, or intrusion detection. The paper proposes a system with guard nodes that collaboratively monitor links to detect compromised nodes. It describes modules for network topology establishment, attack establishment through different wormhole modes, and an elimination mechanism where guard nodes isolate attackers once malicious behaviors exceed thresholds. Simulations test the ability of this scheme to improve security against wormhole attacks in resource-constrained wireless sensor networks.
Wireless sensor networks
The document proposes a label-based secure localization scheme to defend against wormhole attacks in wireless sensor networks. It analyzes the impact of wormhole attacks on DV-Hop localization and describes a three-phase approach to label beacon and sensor nodes to identify and remove illegal connections introduced by wormholes. Simulation results show the scheme is effective at detecting wormholes and minimizing their impact on localization accuracy.
Security in wireless sensor networks
This document discusses security challenges in wireless sensor networks. It covers several topics: why security is needed in WSNs given their mission-critical applications; why security is more complicated in WSNs due to resource constraints of sensor nodes; common security requirements like confidentiality, integrity, and availability; guiding principles for securing WSNs like decentralized management and adaptive security; common attacks against WSNs at different layers of the protocol stack; and open research issues regarding cryptography, key management, secure data aggregation, and other high-level security mechanisms for WSNs.
Abdullah Mukhtar ppt
1- Mobile ad hoc networks are formed dynamically by an
autonomous system of mobile nodes that are connected
via wireless links.
2- Multihop communication- node communicate with the
help of two or more node from source to destination.
3- No existing fixed infrastructure or centralized administration –No base station.
4- Mobile nodes are free to move randomly-Network topology changes frequently
5- May Operate as standalone fashion or also can be connected to the larger internet.
6- Each node work as router
Primary Goals of Security in MANET
To assure a reliable data transfer over the communication networks and to protect the system resources a number of security services are classified in five categories:-
1-Authentication:- The process of identifying an individual , usually based on a username and password.
2- Confidentially:- Confidentiality aims at protecting the data from disclosure to unauthorized person.
Network attacks against confidentiality
* Packet capturing
Password attack
Port scanning
Dumpster Diving
Wiretapping
Phishing and Pharming
2-Non repudiation:- Integrity guarantees that a message being transferred is never corrupted.
3- Integrity:- Integrity guarantees that a message being transferred is never corrupted.
network attack against integrity
Salami attack
trust relationship attacks
Man in the middle attack
Session hijacking attacks
4- Availability:- Its ensure that data ,network resources or network services are available to legitimate user when required.
network attack against availability
Denial of services attacks
Distributed denial of services attack
SYN flood attacks and ICMP flood attacks
Electrical power attacks
Server Room environment attacks
Key management
The security in networking is in many cases dependent on proper key management.
Key management consists of various services, of which each is vital for the security
of the networking systems
* Trust model:-Its must determine how much different element in the network can trust each other.
* Cryptosystem:- Public and symmetric key mechanism can be applied .
* Key creation:- It must determine which parties are allowed to generate key to themselves.
* Key storage :- In adhoc network any network element may have to store its own key and possibly key of other element as well.
* Key distribution:- The key management service must ensure that the generated keys are securely distributed to their owners.
wormhole attacks in wireless networks
MANETs have unique characteristics like dynamic topology, wireless radio medium, limited resources and lack of centralized administration; as a result, they are vulnerable to different types of attacks in different layers of protocol stack. wormhole attack detection in wireless sensor networks
Black hole Attack Avoidance Protocol for wireless Ad-Hoc networks
A Mobile Ad-Hoc Network is a collection of mobile nodes or a temporary network set up by wireless mobile nodes moving arbitrary in the places that have no network infrastructure in such a manner that the interconnections between nodes are capable of changing on continual basis. Thus the nodes find a path to the destination node using routing protocols. However, due to security vulnerabilities of the routing protocols, wireless ad-hoc networks are unprotected to attacks of the malicious nodes. Various attacks and one of those attacks is the Black Hole Attack against network integrity absorbing all data packets in the network. Since the data packets do not reach the destination node on account of this attack, data loss will occur. Therefore, it is a severe attack that can be easily employed against routing in mobile ad hoc networks. There are lots of detection and defense mechanisms to eliminate the intruder that carry out the black hole attack. . Virtual Infrastructure achieves reliable transmission in Mobile Ad Hoc Network. Black Hole Attack is the major problem to affect the Virtual Infrastructure. In this paper, approach on analyzing and improving the security of AODV, which is one of the popular routing protocols for MANET. Our aim is to ensuring the avoidance against Black hole attack.
1705 1708
This document discusses security challenges in mobile ad hoc networks (MANETs) and reviews several secure routing protocols proposed to address these challenges. It begins by introducing MANETs and explaining that routing in MANETs is difficult due to the dynamic topology. It then discusses common security goals for routing protocols like confidentiality, integrity, and availability. Several attacks on MANET routing protocols are described, including passive attacks like eavesdropping and active attacks like wormhole and blackhole attacks. The document proceeds to review six secure routing protocols for MANETs - DSDV, SAR, SAODV, SRP, Secure AODV using RSA signatures, and TORA - and describes their approaches to providing routing security. It concludes
Protocol manet
Here given brief explanation about MANET protocol..and explain about reliable communication in a military MANET
Attacks in MANET
This document discusses security issues and attacks in mobile ad hoc networks (MANETs). It provides an introduction to MANETs and their characteristics. It outlines the general objectives of analyzing flooding attacks on MANETs and preventing such attacks for networks with high node mobility. It describes common attacks on MANETs such as flooding attacks, blackhole attacks, wormhole attacks, and Byzantine attacks. The document also discusses security mechanisms for MANETs including preventive cryptography-based approaches and reactive intrusion detection system approaches. It stresses the need for comprehensive security solutions to deal with the diverse attacks that are facilitated by the open and dynamic nature of MANETs.
Blackhole attack in Manet
Mobile Ad-Hoc Networks are most usefully in current environments. It’s required high performance, networks load and Throughput. In Mobile Ad-hoc Networks Routing is the hot topic for research. Basically two types routing protocols are work in the mobile Ad-hoc Networks: 1) Proactive and 2) Reactive. Researchers have projected different routing algorithm. Important work has been done on routing in ad hoc networks, some of the important works so far were the destination-sequence distance vector (DSDV) protocol, the temporally ordered routing protocol (TORA), dynamic source routing protocol (DSR) and ad hoc on demand routing protocol (AODV). These algorithms use Open Shortest Path First (OSPF) for find optimum route source to destination.ThesisScientist.com
Wormhole Attack
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Security issues and attacks in wireless sensor networks
Here you will find several attacks on wireless network as well as some possible way of prevention and also some applications.
Black hole attack
Black Hole Attack:
A malicious node advertises the wrong paths as good paths to the source node during the pathfinding process.
When the source selects the path including the attacker node, the traffic starts passing through the adversary node and this node starts dropping the packets selectively or in whole.
Black hole region is the entry point to a large number of harmful attacks.
Detection and prevention of wormhole attack in mobile adhoc networks
This document discusses detection and prevention of wormhole attacks in mobile ad hoc networks. A wormhole attack is a powerful attack where two or more malicious nodes collude to tunnel packets between them, emulating a shorter route and attracting traffic. This can severely disrupt network communication. The paper proposes a novel trust-based scheme to identify wormhole-creating nodes without cryptography. Extensive simulations show the scheme effectively handles colluding malicious nodes without imposing extra network conditions.
Securing WSN communication using Enhanced Adaptive Acknowledgement Protocol
This document summarizes an enhanced adaptive acknowledgement protocol for securing wireless sensor network communication. It begins by describing security challenges in WSNs like the wireless medium, hostile environments, and resource constraints. It then discusses common security attacks like black hole and grey hole attacks. Existing acknowledgement schemes like Watchdog, TWOACK, and AACK are explained along with their limitations in detecting such attacks. The document proposes an Enhanced Adaptive Acknowledgement (EAACK) scheme that uses ACK, Secure ACK, and Misbehavior Report Authentication to better detect attacks while reducing overhead. EAACK aims to securely detect black hole, grey hole, and false misbehavior reporting in wireless sensor networks.
DETECTION OF SYBIL ATTACK IN MOBILE ADHOCK NETWORKING
The document discusses a proposed system to detect Sybil attackers in a wireless network using a centralized base station without additional hardware like GPS. It aims to identify Sybil identities with accuracy even when nodes are mobile. A Sybil attacker can create multiple identities on a single device to launch coordinated attacks. The proposed system uses a Neighbor Discovery Distance algorithm and centralized authentication server to reduce packet delay and detect attackers, enabling efficient secure data transmission. It evaluates topology design, neighbor discovery, and how Sybil attacks work to spoof identities and impact networks. Simulation results showed the scheme can effectively detect static and mobile Sybil attackers.
Overview on security and privacy issues in wireless sensor networks-2014
Lecture Outlines
Why Security is Important for WSN
WSNs have many applications e.g.:
military, homeland security
assessing disaster zones
Others.
This means that such sensor networks have mission-critical tasks.
Security is crucial for such WSNs deployed in these hostile environments.
Why Security is Important for WSN
Moreover, wireless communication employed by WSN facilitates
eavesdropping and
packet injection by an adversary.
These mentioned factors require security for WSN during the design stage to ensure operation safety, secrecy of sensitive data, and privacy for people in sensor environments.
Algorithms to achieve security services
Symmetric Encryption
Asymmetric Encryption
Hash Function/Algorithm
Digital Signature
Why Security is Complex in WSN
Because of WSNs Characteristics:
Anti-jamming and physical temper proofing are impossible
greater design complexity and energy consumption
Denial-of-service (DoS) attack is difficult
Sensor node constraints
Sensor nodes are susceptible to physical capture
Deploying in hostile environment.
eavesdropping and injecting malicious message are easy
Using wireless communication
Why Security is Complex in WSN
Because of WSNs Characteristics:
maximization of security level is challenging
Resource consumption
asymmetric cryptography is often too expensive
Node constraints
centralized security solutions are big issue
no central control and constraints, e.g. small memory capacity.
Cost Issues
Overall cost of WSN should be as low as possible.
Typical Attacks to WSN
Physical Attacks
Environmental
Permanently destroy the node, e.g., crashing or stealing a node.
Attacks at the Physical Layer
Jamming: transmission of a radio signal to interfere with WSN radio frequencies.
Constant jamming: No message are able to be sent or received.
Intermittent jamming: Nodes are able to exchange messages periodically
Jamming Attack Countermeasure
Physical Attacks
Node Capture Attacks
routing functionalities
Countermeasure
tamper-proof features
Expensive solution
Self-Protection
disable device when attack detected
Attacks on Routing
Sinkhole attack
attacker tries to attract the traffic from a particular region through it
Solution:
Watchdog Nodes can start to trace the source of false routing information
Attacks on Routing
Sybil attack (Identity Spoofing)
attacker claims to have multiple identities or locations
provide wrong information for routing to launch false routing attacks
Solutions:
Misbehavior Detection.
Identity Protection
Privacy Attacks
Attempts to obtain sensitive information collected and communicated in WSNs
Eavesdropping
made easy by broadcast nature of wireless networks
Traffic analysis
used to identify sensor nodes of interest (data of interest),
WSN Privacy Issues Cont.
WSN Privacy Issues Attack
Trust and reputation in WSN
WSN Traditional Security Techniques
Cryptographic primitive
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TRUST VALUE ALGORITHM: A SECURE APPROACH AGAINST PACKET DROP ATTACK IN WIRELE...
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Black hole Attack Avoidance Protocol for wireless Ad-Hoc networks
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Security issues and attacks in wireless sensor networks
Security issues and attacks in wireless sensor networks
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Overview on security and privacy issues in wireless sensor networks-2014
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A Survey of Security Approaches for Wireless Adhoc NetworksInternational Journal for management Science and Technology - https://www.ijmst.com/
https://www.ijmst.com/
IJMST Volume 1 Issue 1, Manuscript 4
As the popularity of mobile devices and wireless networks significantly increased over the
past years. The wireless adhoc network has now become one of the most vibrant and active
fields of communication and networking research. These networks are a new generation of
networks offering unrestricted mobility without any underlying infrastructure. As their
principle application is in disastrous environments, security is critical. Various challenges are
faced in the adhoc environment, mostly due to the resource poorness of these networks. One
man confront in the design of these networks is their vulnerability to security attacks. The
solutions for conventional networks are usually not sufficient to provide efficient adhoc
operations. Just because of its wireless nature of communication and lack of any security
infrastructure raise several security problems and threats.
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Ad hoc secuirty-vemula
- 1. Security in Wireless Ad-Hoc Networks by Raju Vemula
- 3. Introduction lDifferent technologies have been developed for different situations and necessities. lWi-Fi technology for Wireless LAN and short range mobile access networks. lWireless USB is technology for Internet network on the go. lDifferent technologies like infrared, bluetooth are short range.
- 4. Introduction lAd-Hoc network? lA network formed without any central administration which consists of mobile nodes that uses a wireless interface to send packet data. lImage from www.microsoft.com
- 5. Introduction lThere are 2 types ad-hoc networks. lMANET(Mobile ad-hoc network) lAn autonomous system of mobile hosts connected by wireless links, often called MANET. lEstablishing survivable, efficient, dynamic communication for emergency/rescue operations. lDisaster relief efforts.
- 7. Introduction lWSN(Wireless Sensor Network) lA smart sensor network consists of a number of sensors spread across a geographical area. lEach sensor has wireless communication capability and sufficient intelligence for signal processing and networking. lMilitary sensor networks to detect enemy movements. lThe presence of hazardous material. lEnvironmental sensor networks to detect and monitor environmental changes.
- 9. Properties There is no fixed topology Wireless nodes are small they move freely in and out of range. lE.g. Mobile phones, PDA, and wrist watches. Limited energy Most of the devices are operate on battery power which is limited.
- 10. Properties Every node is a router Every node present in the network has limited amount of communication range. All nodes out of this range can only be reached by packet forwarding. Limited CPU/Resources In consume electronics price plays a big role. They are cheap and have limited CPU power.
- 11. Security Functions Availability It makes sure that all the required network services are available to the authorized users. Authentication Authentication enables MANET to ensure the identity of peer node that is communicating with. Confidentiality Confidentiality ensures that some information discloses only to the unauthorized users.
- 12. Security Functions Data Integrity It guarantees for the information that is being transferred. Key and trust management Basic operations includes establishing key exchange and update as well as secret connections.
- 13. Classification of attacks lThere are so many ways that a malicious user may attack a ad- hoc network. lInternal attacks lInternal attacks are more difficult to protect against as the internal nodes are trustworthy. lExternal attacks lExternal attacks are produced by users which are not part of network. For example one may issue an attack on company from the office next to that.
- 14. Classification of attacks lThe other types of attacks are: lActive attacks lActive attacks are caused by the users who are able to inject the packets into the network. They are able to alter the data, interfere with the routing information and disrupt the service. lPassive attacks lPassive attacks is mainly to steal information and to listen on the communication in the network. These may monitor and analyze the traffic.
- 15. Classification of attacks lAnother way to classify the attacks is by the layer at which they may occur. lAt the physical layer the malicious user may jam the communication, intercept the messages or they may just listen the messages. lAt the data link layer the attacks conducted are traffic analysis and monitoring and service disruption. lAt network layer many attacks are observed like wormhole, black hole, flooding, and resource consumption.
- 16. • Wormhole Attack: In this attack network tunnel information to another network. At this time hacker may easily enter and do misuse inside the network. • Black hole Attack: It is a type of DOS(Denial of service) attack in which a router that is supposed to relay packets instead discard them.
- 17. Solutions l“Packet Leashes: A Defense Against Wormhole Attacks in Wireless Ad Hoc Networks”, Yih-Chun Hu, Adrian Perrig, David. B. Johnson lProtection against warm-hole attacks lPacket leashes lTemporal lThe packet has an upper bound on its lifetime which restricts the maximum travel distance. lTransmission time and expiration time of the packet. lGeographical lThe recipient of the packet is within a certain distance from the sender.
- 18. Solutions l“Security-Aware Ad Hoc Routing for Wireless Networks”, Seung Yi, Prasad Naldurg, Robert Kravets lProtection against black-hole attacks lUser identity is bound with an associated trust level. lFor each trust level, it is used a simple shared secret to generate a symmetric encryption/decryption key lProvides a suite of cryptographic techniques: digital signature, and encryption
- 19. Key Management lKey management system must be secure, cause most cryptographic system rely on it. l3 types of keys in the network lGroup Key Key for all members in group to encrypt and decrypt the data. lSymmetric key Shared between team leader and member node of the same group. lShared key Shared only by all group leaders in the network.
- 20. Conclusion lSituations are unpredictable with the wireless networks, even with the infrastructural support. lPresent solutions to address these attacks are not strong enough. lKey management solutions may help, but not every time. lStill a lot of research has to be done.
- 21. References lH Yang, H Y. Luo, F Ye, S W. Lu, and L Zhang, “Security in mobile ad hoc networks: Challenges and solutions” (2004). IEEE Wireless Communications. 11 (1), pp. 38-47. lYih-Chun Hu , Adrian Perrig, “A Survey of Secure Wireless Ad Hoc Routing”, IEEE Security and Privacy, v.2 n.3, p.28-39, May 2004. lThe Resurrecting Duckling: Security Issues for Ad-hoc Wireless Networks. Frank Stajano, Ross Anderson. lAdam Burg, “Ad hoc network specific attacks”, Seminar on Ad hoc networking: concepts, applications, and security, Technische Universitat Munchen, 2003. lCharles E. Perkins (Hrsg.). Ad Hoc Networking, Addison-Wesley 2000.
- 22. Thank you