Math 2
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This document discusses assumptions and requirements for broadcast communication in a multi-agent system. It assumes that agents know how to address other agents and how to communicate with each other. Broadcast refers to one-to-many communication where a message from a single agent is destined for all other agents in the local network. The software requirement is that the agentMom platform must support both sending and receiving broadcast messages to all hosts in the local network.
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Man in The Middle Attack
A man-in-the-middle (MITM) attack intercepts communications between two parties by relaying and controlling messages between them. The attacker eavesdrops and potentially modifies the communication by replacing the keys for their own. This allows them to intercept sensitive transmissions like passwords or financial transactions. A MITM works by spoofing the MAC address of the target to intercept and manipulate traffic between the target and other devices on the network, such as a router. Encrypted connections and careful certificate verification can help prevent MITM attacks.
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A man-in-the-middle attack is where an attacker secretly relays communications between two parties who believe they are directly communicating, allowing the attacker to intercept and potentially alter these communications. There are two main types - one using physical proximity to intercept wireless communications, and one using malware to intercept communications. Some common man-in-the-middle attack techniques aim to spoof IP addresses, DNS information, HTTPS secure connections, SSL encryption, email sender addresses, or eavesdrop on Wi-Fi networks to intercept user communications and credentials.
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The document discusses man-in-the-middle attacks using HTTP and Wireshark. A man-in-the-middle attack intercepts communications between two systems by compromising the connection between a client and server. Wireshark is a network protocol analyzer that can be used to launch man-in-the-middle attacks on HTTP traffic by inspecting packets at a deep level within a local area network. The attacks are effective because HTTP and its data transfers use plain ASCII text which can be easily read.
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A man-in-the-middle attack intercepts communications between two systems by compromising the connection, such as the TCP connection between an HTTP client and server. Tools like Wireshark and tcpdump can be used to perform a man-in-the-middle attack on HTTP traffic in a LAN network by analyzing packets at the deepest level. Wireshark is used in this scenario to attack vulnerabilities between network nodes.
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A VPN allows remote users to securely access a private network by establishing an encrypted connection over the public internet. There are three main types of VPNs: client access, intranet, and extranet. Security risks include attacks on the transmission line or stealing certificates and keys. To use a VPN, one needs OpenVPN software along with client and server certificates and a password. Additional security measures in OpenVPN include TLS encryption, larger RSA keys, larger symmetric keys, and hardening against DoS attacks and port scanning.
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A Secure Proxy Signature Scheme with Fault Tolerance Based On Discrete Logari...International journal of scientific and technical research in engineering (IJSTRE)
The techniques of proxy signature and fault tolerance are two important issues in modern
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Man in The Middle Attack
A man-in-the-middle (MITM) attack intercepts communications between two parties by relaying and controlling messages between them. The attacker eavesdrops and potentially modifies the communication by replacing the keys for their own. This allows them to intercept sensitive transmissions like passwords or financial transactions. A MITM works by spoofing the MAC address of the target to intercept and manipulate traffic between the target and other devices on the network, such as a router. Encrypted connections and careful certificate verification can help prevent MITM attacks.
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A man-in-the-middle attack intercepts communications between two systems by compromising the connection, such as the TCP connection between an HTTP client and server. Tools like Wireshark and tcpdump can be used to perform a man-in-the-middle attack on HTTP traffic in a LAN network by analyzing packets at the deepest level. Wireshark is used in this scenario to attack vulnerabilities between network nodes.
Bao cao vpn
A VPN allows remote users to securely access a private network by establishing an encrypted connection over the public internet. There are three main types of VPNs: client access, intranet, and extranet. Security risks include attacks on the transmission line or stealing certificates and keys. To use a VPN, one needs OpenVPN software along with client and server certificates and a password. Additional security measures in OpenVPN include TLS encryption, larger RSA keys, larger symmetric keys, and hardening against DoS attacks and port scanning.
Unauthorized access, Men in the Middle (MITM)
In this type of attack, the attacker attempts to insert himself in the
middle of a communication for purposes of intercepting client’s data.
SSL MITM Attack Over Wireless
The document discusses a man-in-the-middle attack over a wireless network. It describes how a hacker can intercept traffic between a victim and the host they are communicating with by placing themselves in the middle. The hacker sets up a rogue wireless access point and uses tools like DNS spoofing and a delegated proxy server to redirect traffic and perform an SSL man-in-the-middle attack by presenting a fake certificate to the victim. A demonstration of this attack will be shown from the victim's perspective in the next video.
A Secure Proxy Signature Scheme with Fault Tolerance Based On Discrete Logari...
A Secure Proxy Signature Scheme with Fault Tolerance Based On Discrete Logari...International journal of scientific and technical research in engineering (IJSTRE)
The techniques of proxy signature and fault tolerance are two important issues in modern
communication.Proxy signature scheme permits an original signer to delegate his/her signing capability to a
proxy signer, and then the proxy signer generates a signing message on behalf of the original signer. To
communicate securelyover an unreliable public network, the two parties must be able to authenticate one
another and agree on a secret encryption key. Authenticated key agreement protocols have an important role in
building a secure communications network between the two parties. In this paper, we propose a secure proxy
signature scheme with fault tolerance over an efficient and secure authenticated key agreement protocol based
on the discrete logarithm problem.The scheme does not require any extra mechanism, such as checkpoints, to
achieve the property of fault tolerance.Deniable Encryption Key
This document summarizes a research paper on deniable encryption. The paper proposes a receiver-deniable public key encryption scheme with the following properties:
1) It is a one-move scheme that does not require any pre-encryption communication between the sender and receiver.
2) It does not require any pre-shared secrets between parties.
3) It provides strong deniability equivalent to factoring a large composite number.
4) It has no decryption errors.
5) It significantly improves bandwidth efficiency compared to previous schemes.
The proposed scheme uses a mediated RSA infrastructure and relies on oblivious transfer between the receiver and security mediator to enable deniability for the receiver.
Man in the middle attack (mitm)
A Man-In-The-Middle (MITM) attack is where an attacker secretly intercepts communications between two parties who believe they are directly communicating with each other. The attacker can view or modify the communications. Examples include the attacker creating a fake Wi-Fi access point to intercept personal information, hijacking email accounts to divert payments, or stealing browser cookies to hijack web sessions. To prevent MITM attacks, people should use encrypted VPNs, sign out of unused accounts, and avoid auto-filling passwords on untrusted sites.
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Today, more than ever, computer networks are utilized for sharing services and resources. Information travelling across a shared IP-based network, such as the Internet, could be exposed to many devious acts such as eavesdropping, forgery and manipulation. Fortunately, there are several mechanisms that can protect any information that needs to be sent over a network. This paper introduces security threats to today’s IP-based networks and explains available security mechanisms to effectively prevent such threats from happening.
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Playfair, Hill Cipher, Transposition techniques, Encryption and Decryption,
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3. Network security protocols like SSL/TLS, VPNs, and techniques for securing wireless networks like WEP.
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The KAMAN scheme proposes using multiple Kerberos servers for distributed authentication in mobile ad hoc networks. When a node needs to communicate securely with another, it requests a session key from one of the Kerberos servers. The server generates the key, encapsulates it in a ticket, and sends it to the requesting client. The client can then use this ticket to securely communicate with the intended party. The scheme introduces measures like database replication and server elections to handle node mobility and failures.
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2. It then discusses internet security including client-server security using methods like passwords, firewalls, and encryption. Data and transaction security also uses encryption.
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Virtual private networks (VPNs) provide a secure connection over public networks by encrypting data transmission. VPNs use encryption and authentication to securely transmit data across unsecured networks like the internet. There are two main types of VPNs - transport mode VPNs encrypt only the data portion of network packets, while tunnel mode VPNs encrypt the entire client packet.
Transport mode virtual private network(vpn)
Virtual private networks (VPNs) provide a secure connection over public networks by encrypting data transmission. VPNs use encryption and authentication to securely transmit data across unsecured networks like the internet. There are two main types of VPNs - transport mode VPNs encrypt only the data portion of network packets, while tunnel mode VPNs encrypt the entire client packet.
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As technology is running on its wheels, networking has turned into one of our basic aspects. In this world along with
networking inimical vulnerabilities are also advancing in a drastic manner, resulting in perilous security threats. This calls for the great
need of network security. ARP spoofing is one of the most common MITM attacks in the LAN. This attack can show critical
implications for internet users especially in stealing sensitive information’s such as passwords. Beyond this it can facilitate other
attacks like denial of service(DOS), session hijacking etc..,. In this paper we are proposing a new method by encrypting MAC address
to shield from ARP cache poisoning
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This document summarizes a research paper on deniable encryption. The paper proposes a receiver-deniable public key encryption scheme with the following properties:
1) It is a one-move scheme that does not require any pre-encryption communication between the sender and receiver.
2) It does not require any pre-shared secrets between parties.
3) It provides strong deniability equivalent to factoring a large composite number.
4) It has no decryption errors.
5) It significantly improves bandwidth efficiency compared to previous schemes.
The proposed scheme uses a mediated RSA infrastructure and relies on oblivious transfer between the receiver and security mediator to enable deniability for the receiver.
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Network security unit 1,2,3
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Playfair, Hill Cipher, Transposition techniques, Encryption and Decryption,
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The document discusses key distribution and authentication using symmetric encryption. It describes several options for distributing symmetric keys between two parties, including having a third party select and deliver the key. The most preferable option is using a key distribution center (KDC) that can dynamically provide session keys for encryption between hosts that have been granted permission to communicate. The document then provides details on how Kerberos, a widely used authentication system, implements this approach using a KDC, ticket granting tickets, and service granting tickets to authenticate users and allow secure communication without transmitting plaintext passwords. It also summarizes some of the environmental and technical deficiencies addressed in the updated Kerberos version 5 protocol.
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This document provides an overview of cryptography and security. It discusses symmetric and asymmetric cryptography, comparing their basic approaches. Symmetric cryptography uses the same key for encryption and decryption, while asymmetric cryptography uses different public and private keys. The document also defines basic cryptography terms like plain text, cipher text, and encryption/decryption. It describes traditional substitution and transposition ciphers as well as modern symmetric and asymmetric techniques. The goal is to maintain data security, confidentiality, authentication, and integrity through the appropriate use of encryption.
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This document discusses various aspects of network security, including:
1. Secure communication techniques like confidentiality, authentication, message integrity, and access control.
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3. Various security methods are described for client/server and data/transaction security including password schemes, firewalls, and encryption techniques.
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IPS NAT and VPN.pptx
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The document discusses and defines intrusion detection systems (IDS), intrusion prevention systems (IPS), network address translation (NAT), and virtual private networks (VPN). It explains that IDS monitor networks for suspicious activity, while IPS can also block threats. It describes static and dynamic NAT and port address translation (PAT). It also outlines remote access VPNs for connecting remote users, site-to-site VPNs for connecting office networks, and common VPN protocols like IPsec. The document provides an overview of these key network security concepts.
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The document discusses different types of internetworking devices, specifically routers and gateways. Routers operate at the physical, data link and network layers and can connect heterogeneous networks using a common protocol. Gateways can connect networks using different protocols. Gateways act as entrances between networks and include functions like proxy servers, firewalls, and translating between communication protocols used by different networks or devices. Common gateways discussed include default gateways, application gateways, WAP gateways, and SMS gateways.
Transport mode virtual private network(vpn)
Virtual private networks (VPNs) provide a secure connection over public networks by encrypting data transmission. VPNs use encryption and authentication to securely transmit data across unsecured networks like the internet. There are two main types of VPNs - transport mode VPNs encrypt only the data portion of network packets, while tunnel mode VPNs encrypt the entire client packet.
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Virtual private networks (VPNs) provide a secure connection over public networks by encrypting data transmission. VPNs use encryption and authentication to securely transmit data across unsecured networks like the internet. There are two main types of VPNs - transport mode VPNs encrypt only the data portion of network packets, while tunnel mode VPNs encrypt the entire client packet.
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As technology is running on its wheels, networking has turned into one of our basic aspects. In this world along with
networking inimical vulnerabilities are also advancing in a drastic manner, resulting in perilous security threats. This calls for the great
need of network security. ARP spoofing is one of the most common MITM attacks in the LAN. This attack can show critical
implications for internet users especially in stealing sensitive information’s such as passwords. Beyond this it can facilitate other
attacks like denial of service(DOS), session hijacking etc..,. In this paper we are proposing a new method by encrypting MAC address
to shield from ARP cache poisoning
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Mobile agents are autonomous software programs that can migrate between systems or hosts. They perform processing tasks at each host and decide autonomously when and where to move next. Mobile agents allow for asynchronous and distributed processing without needing a centralized server by migrating code and data between hosts as needed.
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Presentations are typically demonstrations, introduction, lecture, or speech meant to inform, persuade, inspire, motivate, build goodwill, or present a new idea/product. Presentations usually require preparation, organization, event planning, writing, use of visual aids, dealing with stress, and answering questions.A job description section on your resume shows the prospective employers your past work experience, as well as your skills and accomplishments. When writing a work experience section, focus on your skills and achievements, rather than your duties and responsibilities. This section typically includes a quick overview of the job seeker's most relevant qualifications
An mysterious location based efficient routing protocol in manets
Abstract Mysterious Location-based Efficient Routing Protocol (MLRT) is an anonymous routing protocol its play a vital role in Mobile Ad hoc Networks (MANETs). MLRT provide a secure communication by hiding the node identities and preventing the traffic analysis attacks from outside observers in order to provide a mysterious protection. It dynamically partition the network into subzones till the sender and receiver are in different zones and the nodes in the zones are connected as intermediate relay nodes. It uses random relay node selection is difficult for intruder detection and dynamically generating an unpredictable routing path for a message. It maintains a time limit for message transmission due to security and control the time delay. MLRT offers mysterious protection to sources, destinations and routes. It achieves better route anonymity protection and lower cost compared to other anonymous routing protocols. It has a strategy to effectively solve the intersection attacks and avoid timing attacks because of its non-fixed routing paths for a source and destination pair. Also MLRT mainly works on Greedy Perimeter Stateless Routing (GPSR) algorithm. .Key Words: Mysterious, routing protocol, mobile ad hoc networks, GPSR.
Mlrt an mysterious location based efficient routing protocol in manets
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SECURE LOCATION BASED ROUTING FOR MANETS
The video demonstrates sending the file from source to the destination by initially encrypting it using multihops and then decrypting it at the receiver's end
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This document discusses security issues in wireless sensor networks. It outlines the key security requirements of authenticity, confidentiality, and integrity to prevent attacks from unauthorized nodes injecting malicious data or modifying messages. It also notes that security needs to be integrated into every node and addresses at the link layer and routing layers are important. Various threats and attacks are also discussed.
A NEW GENERATION OF DRIVER ASSISTANCE AND SECURITY
Vehicular ad hoc networks are tremendously and very effectively used for safety related applications. Especially
for driver assistance and when it comes to safety of either from an accident or stealing of data VANET is the future of the all such problems.”A New Generation of Driver Assistance and Security” gives a idea about VANET and also provide solutions to various problems comes in this. Authentication will be provided by Group signature and Identity based (ID- based) Signature scheme. The scheme Provides cost effective, highly privacy
preserving of user, efficient message authentication and verification than existing system for VANETs. This
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Math 2
- 1. NURUL IZZATI BT MD NASIR A 142150
- 2. Software Requirements for AgentMom User’s Manual, Air Force Institute of Technology, July 2000 Multiagent Systems Engineering.
- 3. Assumptions and Dependencies • We assume that each agent knows the address of destinating agents in order to send unicast message. • We assume that each agent has enough knowledge to decide the best way to communicate with the other agents. • In the case of using secured multicast communication, we assume that there is an agent whom each agent can request for the same encryption and decryption key. This agent should maintain a list of agents who are allowed to get the keys. • We assume that each agent knows the multicast address in order to send multicast message.
- 4. Broadcast refers to one-to-many communication in such a way that a packet originates from a single Internet host, and it is destined to all receivers within the same local network.
- 5. Statement • An agent sends message to everyone in the same local network. • Other agent in the same local network receive message • In this situation, Agent_A wants to send a message to everyone within the same local network that agent A belongs to. This involves the broadcast communication since any agent in the same local network as Agent_A can receive this message. • For instance, when a new agent who does not previously exist in that local network wants to announce the existence to other agents.
- 6. Software Requirement Broadcast Communication • *agentMom shall support the ability to sent broadcast message. • *agentMom shall support the ability to receive broadcast message. • *Broadcast message shall be sent to all possible hosts under the same local network.