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Tsinghua Science and Technology  2018, Vol. 23 Issue (1): 13-21    doi: 10.26599/TST.2018.9010020
Special Section on Cyberspace     
Secure DHCPv6 Mechanism for DHCPv6 Security and Privacy Protection
Lishan Li, Gang Ren, Ying Liu*, Jianping Wu
∙ Lishan Li, Gang Ren, Ying Liu, and Jianping Wu are with the Institute for Network Sciences and Cyberspace, Tsinghua University, Beijing 100084, China.
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With the rapid developmen of the Internet, the exhaustion of IPv4 address limited the development of the Internet for years. IPv6, as the core technology of the next generation Internet, has since been rapidly deployed around the world. As the widely deployed address configuration protocol, DHCPv6 is responsible for allocating globally unique IPv6 addresses to clients, which is the basis for all the network services. However, the initial design of the DHCPv6 protocol gave little consideration to the privacy and security issues, which has led to a proliferation of privacy and security accidents breaches in its real deployment. In this paper, to fundamentally solve a range of possible security and privacy issues, we propose a secure DHCPv6 mechanism, which adds authentication and encryption mechanisms into the original DHCPv6 protocol. Compared with other proposed security mechanisms for the DHCPv6, our method can achieve all-around protection for the DHCPv6 protocol with minimal change to the current protocol, easier deployment, and low computing cost.

Key wordsDHCPv6      security      privacy      IETF      authentication      encryption     
Received: 20 November 2016      Published: 12 April 2019
Corresponding Authors: Ying Liu   
About author:

Jianping Wu received the BS, MS, and PhD degrees from Tsinghua University, China. His research interests include next-generation Internet, IPv6 deployment and technologies, and Internet protocol design and engineering. He is currently a full professor in Tsinghua University, vice chairman of the information committee, and director of the Information Office, Dean of the CS Department and Director of the Network Research Center, Dean of Institute for Network Sciences and Cyberspace, and Director of Information Technology Center, Tsinghua University. He is director of Network Center and Technic Committee of China Education and Research Network CERNET, director of the National Engineering Laboratory for Next Generation Internet, a member of Advisory Committee of National Information Infrastructure for Secretariat of State Council of China, and vice president of Internet Society of China (ISC). He is an IEEE Fellow and was also the Chairman of Asia Pacific Advanced Network from 2007 to 2011. He received the Jonathan B. Postel Award from the Internet Society in 2010.

Cite this article:

Lishan Li, Gang Ren, Ying Liu, Jianping Wu. Secure DHCPv6 Mechanism for DHCPv6 Security and Privacy Protection. Tsinghua Science and Technology, 2018, 23(1): 13-21.

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Fig. 1 Rogue DHCPv6 server attack.
Fig. 2 DHCPv6 message tampering attack.
Fig. 3 Denial-of-service attack for DHCPv6.
No.Faced threatPossible attacksSecure requirement
1SpoofingRogue server attackServer authentication
2Temperingmitm attackMessage integrity check
3Denial of serviceDDoS attackServer availability
4Information disclosureNetwork activity tracking, location tracking address scanning, device-specific vulnerabilityConfidentiality
Table 1 Threat model for DHCPv6.
Fig. 4 Secure DHCPv6 configuration process.
Fig. 5 Format of the Encrypted-Query message.
Fig. 6 Format of the signature option.
Fig. 7 Implementation result on the client side.
Fig. 8 Implementation result on the server side.
ArticleKey technologyDefense capabilityImpact on the current protocolDeployment difficultyComputing cost
RFC7844Randomized DUID generation method on the client side3Replace the before stable DUID generation methodHardNo extra cost
RFC3315Message authentication based on symmetric key1, 2, 4Add Authentication optionHardSmall cost
Secure DHCPv6Authentication and encryption based on asymmetric keys1, 2, 3, 4Add server authentication before normal processEasySmall cost
Table 2 Comparison of the secure mechanisms for DHCPv6.
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