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Explain and write a summary of the technical nature of the following common attacks and ways to prevent them. Replay Attack

Explain and write a summary of the technical nature of the following common attacks and ways to prevent them. Replay Attack

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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**Summary of Common Attacks: Replay Attack** **Replay Attack:** A replay attack occurs when a malicious party intercepts and captures a data transmission, then replays or retransmits it with the intention of causing an unauthorized effect. This type of attack can be particularly harmful in scenarios where authentication credentials are valid for repeated use, such as in online banking or access control systems. **Prevention Methods:** 1. **Use of Time Stamps:** Including a time stamp in each message can help ensure that old messages cannot be resent, as the receiving system can compare the time stamp to the current time. 2. **Nonce Implementation:** A nonce is a random or pseudo-random number used only once. Incorporating a nonce in each session can help prevent replay attacks by making intercepted messages invalid if replayed. 3. **Session Tokens:** Implementing session tokens that expire after a set time frame or after being used can help mitigate replay attacks. 4. **Secure Communication Protocols:** Utilizing secure protocols such as HTTPS or employing encryption can add layers of security against interception and replay attacks. Understanding and implementing these methods can significantly bolster the security posture against replay attacks.
Transcribed Image Text:**Summary of Common Attacks: Replay Attack** **Replay Attack:** A replay attack occurs when a malicious party intercepts and captures a data transmission, then replays or retransmits it with the intention of causing an unauthorized effect. This type of attack can be particularly harmful in scenarios where authentication credentials are valid for repeated use, such as in online banking or access control systems. **Prevention Methods:** 1. **Use of Time Stamps:** Including a time stamp in each message can help ensure that old messages cannot be resent, as the receiving system can compare the time stamp to the current time. 2. **Nonce Implementation:** A nonce is a random or pseudo-random number used only once. Incorporating a nonce in each session can help prevent replay attacks by making intercepted messages invalid if replayed. 3. **Session Tokens:** Implementing session tokens that expire after a set time frame or after being used can help mitigate replay attacks. 4. **Secure Communication Protocols:** Utilizing secure protocols such as HTTPS or employing encryption can add layers of security against interception and replay attacks. Understanding and implementing these methods can significantly bolster the security posture against replay attacks.
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Step 1 Explanation

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A replay attack is when an attacker captures data packets being transmitted between two parties, and then retransmits those packets at a later time in order to disrupt communication or access sensitive data. To prevent replay attacks, data packets can be time stamped or given a unique ID that can be verified by the receiving party.

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