Question.3840 - S9- Case Project 10-5 IPv6 Paper Sherrie Anderson Governors State University CPSC 6580 Professor Marse VisnevacOctober 27th, 2024 S9- Case Project 10-5 IPv6 Paper IPv6 provides robust security enhancements over IPv4 through its mandatory support of IP Security (IPsec), which in turn provides cryptographic-level protection for datasets confidentiality, integrity, and authenticity. Unlike IPv4, where IPsec is optional because it can be integrated as a core feature. IPsec secures data packets by encapsulating them in the Encapsulating Security Payload (ESP) for encryption or authenticating them with the Authentication Header (AH), which effectively mitigates multiple packet interception and tampering risks; which provides comprehensive encryption, coupled with accessibility control capabilities, promoting IPv6s defense against unauthorized data access and potential tampering attacks ("InfoSec," 2024). Currently, IPv6's address size and Cryptographically Generated Address (CGA) is a substantial advancement since it utilizes a 128-bit address format, exponentially increasing address availability compared to IPv4s 32-bit restriction; due to the vast address scope - it makes traditional scanning attacks nearly impractical as itemizing an IPv6 network requires more time and resources ("InfoSec," 2024). Also, CGA binds a public key to an IPv6 address, authorizing users to own an address cryptographically, which in turn drastically reduces IP spoofing attacks, as attackers would require accessibility to the cryptographic key, which is uniquely tied to the address owner; the setup facilitates a streamlined secure Neighbor Discovery (ND) process, improving the networks resilience to tackle spoofing and IP hijacking attempts, both of which were more feasible in IPv4 networks ("InfoSec," 2024). IPv6 also replaces IPv4's Address Resolution Protocol (ARP) with the Neighbor Discovery (ND) Protocol, eliminating ARPs susceptibilities, like the ARP spoofing; wherein the Neighbor Discovery protocol links the Ip addresses to MAC addresses without external mapping, securely restraining address resolution through multicast requests rather than broadcasting, this shift of protocol in turn removes the risks associated with rogue device communication on the network ("InfoSec," 2024). Although certain challenges remain like IPv6 lacking inherent defenses against higher-layer attacks like like brute-force password attacks or Denial of Service (DoS) attacks, so a dual-layer security method is necessary for a fully secure network environment. Together, these IPv6 security enhancements represent a substantial upgrade, laying the groundwork for a more secure and resilient Internet protocol framework. References InfoSec (www.infosec.gov.hk). (2024, October 27). InfoSEC: IPV6 Security. InfoSec. https://www.infosec.gov.hk/en/best-practices/business/ipv6-security

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