IPv6 in smart cities

Though the transition from IPv4 to IPv6 is inevitable both in the public Internet and concerning the different smart technologies (e.g. smart cities, smart homes, etc.) there are still several legacy applications exist, which are capable for IPv4 only. Therefore, the different IPv6 transition technologies play an important role: they enable the communication between the IPv4 and the IPv6 domains.

Research topics
  • Development of DNS64 server programs
  • Benchmarking methodology and tools for IPv6 transition technologies
  • Performance analysis of different implementations of IPv6 transition technologies
  • Security analysis of IPv6 transition technologies
Results
  • Development of an RFC 8219 compliant tester for SIIT (also called stateless NAT64) gateways called siitperf
  • Benchmarking different authoritative DNS server implementations (BIND, YADIFA, NSD, Knot DNS)
  • Benchmarking different DNS64 server implementations (BIND, PowerDNS, Unboud)
  • Development of MTD64 and mtd64-ng DNS64 server programs
  • Participation in the development of RFC 8219 Benchmarking methodology for IPv6 transition technologies
  • Development of the dns64perf2 and dns64perf++ DNS64 performance measurement programs
  • Performance analysis of MTD64 and mtd64-ng DNS64 server programs
DNS64 performance measurement setup

DNS64 performance measurement testbed

Publications
  • A. Al-Azzawi and G. Lencse, “Analysis of the Security Challenges Facing the DS-Lite IPv6 Transition Technology”, Electronics, vol. 12, no. 10, May 2023, Paper ID: 2335, DOI: 10.3390/electronics12102335
  • G. Lencse and N. Nagy, “Towards the scalability comparison of the Jool implementation of the 464XLAT and of the MAP-T IPv4aaS technologies”, International Journal of Communication Systems, vol. 35, no. 18, December 2022, Paper ID: e5354, DOI: 10.1002/dac.5354
  • G. Lencse, J. Palet Martinez, L. Howard, R. Patterson, I. Farrer, “Pros and Cons of IPv6 Transition Technologies for IPv4-as-a-Service (IPv4aaS)”, IETF RFC 9313, Oct. 2022, DOI: 10.17487/RFC9313
  • A. Al-hamadani, and G. Lencse, “Towards Implementing a Software Tester for Benchmarking MAP-T Devices”, Infocommunications Journal, vol. 14, no. 3, September 2022, pp. 45-54, DOI: 10.36244/ICJ.2022.3.6
  • N. Nagy and G. Lencse, “Port Number Exhaustion of a 464XLAT Implementation in a Virtual Environment”, 45th International Conference on Telecommunications and Signal Processing (TSP 2022), Virtual Conference, July 13-15, 2022, pp. 160-163. DOI: 10.1109/TSP55681.2022.9851326
  • O. D’yab and G. Lencse, “Testbed for the Comparative Analysis of DS-Lite and Lightweight 4over6 IPv6 Transition Technologies”, 45th International Conference on Telecommunications and Signal Processing (TSP 2022), Virtual Conference, July 13-15, 2022, pp. 371-376. DOI: 10.1109/TSP55681.2022.9851309
  • A. Al-Azzawi and G. Lencse, “Identification of the Possible Security Issues of the 464XLAT IPv6 Transition Technology”, Infocommunications Journal, vol. 13, no. 4, pp. 10-18, December 2021, DOI: 10.36244/ICJ.2021.4.2
  • A. Al-hamadani and G. Lencse, “Design of a Software Tester for Benchmarking Lightweight 4over6 Devices”, 44th International Conference on Telecommunications and Signal Processing (TSP 2021), Brno, Czech Republic, July 26-28, 2021, pp. 157-161, DOI: 10.1109/TSP52935.2021.9522607
  • A. Al-Azzawi and G. Lencse, “Testbed for the Security Analysis of the 464XLAT IPv6 Transition Technology in a Virtual Environment”, 44th International Conference on Telecommunications and Signal Processing (TSP 2021), Brno, Czech Republic, July 26-28, 2021, pp. 5-9, DOI: 10.1109/TSP52935.2021.9522598
  • A. T. H. Al-hamadani, G. Lencse, “A survey on the performance analysis of IPv6 transition technologies”, Acta Technica Jaurinensis, vol. 14, no. 2, pp. 186-211, May 26, 2021. DOI: 10.14513/actatechjaur.00577
  • G. Lencse, “Design and Implementation of a Software Tester for Benchmarking Stateless NAT64 Gateways”, IEICE Transactions on Communications, vol. E104-B, no.2, pp. 128-140. February 1, 2021. DOI: 10.1587/transcom.2019EBN0010
  • G. Lencse, “Adding RFC 4814 Random Port Feature to Siitperf: Design, Implementation and Performance Estimation”, International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, vol 9, no 3, pp. 18-26, 2020, DOI: 10.11601/ijates.v9i3.291
  • G. Lencse, “Benchmarking Stateless NAT64 Implementations with a Standard Tester”, Telecommunication Systems (Springer), vol. 75, no. 3, pp. 245-257, 2020. DOI: 10.1007/s11235-020-00681-x
  • G. Lencse, “Benchmarking Authoritative DNS Servers”, IEEE Access, vol. 8. pp. 130224-130238, July 2020. DOI: 10.1109/ACCESS.2020.3009141
  • A. Al-Azzawi and G. Lencse, “Towards the Identification of the Possible Security Issues of the 464XLAT IPv6 Transition Technology”, 43rd International Conference on Telecommunications and Signal Processing (TSP 2020), Milan, Italy, July 7-9, 2020, pp. 439-444, DOI: 10.1109/TSP49548.2020.9163487
  • V. Iró, G. Lencse, “Survey on Measurement Methods for IPv6 Deployment”, Acta Technica Jaurinensis, vol 13, no 2, pp. 112-130, May 27, 2020, DOI: 10.14513/actatechjaur.v13.n2.544
  • G. Lencse, K. Shima, “Performance Analysis of SIIT Implementations: Testing and Improving the Methodology”, Computer Communications (Elsevier), vol. 156, no. 1, pp. 54-67, April 15, 2020, DOI: 10.1016/j.comcom.2020.03.034
  • G. Lencse and Y. Kadobayashi, “Comprehensive Survey of IPv6 Transition Technologies: A Subjective Classification for Security Analysis”, IEICE Transactions on Communications, vol. E102-B, no.10, pp. 2021-2035. DOI: 10.1587/transcom.2018EBR0002
  • G. Lencse and Y. Kadobayashi, “Benchmarking DNS64 Implementations: Theory and Practice”, Computer Communications (Elsevier), vol. 127, no. 1, pp. 61-74, September 1, 2018, DOI: 10.1016/j.comcom.2018.05.005
  • G. Lencse and Y. Kadobayashi, “Methodology for the identification of potential security issues of different IPv6 transition technologies: Threat analysis of DNS64 and stateful NAT64”, Computers & Security (Elsevier), vol. 77, no. 1, pp. 397-411, August 1, 2018, DOI: 10.1016/j.cose.2018.04.012
  • G. Lencse, “Enabling Dns64perf++ for Benchmarking the Caching Performance of DNS64 Servers”, Journal of Computing and Information Technology, vol. 26, no 1, pp. 19-28. July 2018, DOI: 10.20532/cit.2018.1004078
  • G. Lencse, M. Georgescu, and Y. Kadobayashi, “Benchmarking Methodology for DNS64 Servers”, Computer Communications (Elsevier), vol. 109, no. 1, pp. 162-175, September 1, 2017, DOI: 10.1016/j.comcom.2017.06.004
  • G. Lencse and D. Bakai, “Design, implementation and performance estimation of mtd64-ng, a new tiny DNS64 proxy”, Journal of Computing and Information Technology vol. 25, no, 2, pp. 91-102, June 2017, DOI: 10.20532/cit.2017.1003419
  • G. Lencse, D. Bakai, “Design and implementation of a test program for benchmarking DNS64 servers”, IEICE Transactions on Communications, vol. E100-B, no. 6. pp. 948-954, June 2017. DOI: 10.1587/transcom.2016EBN0007
  • B. Almási, G. Lencse, Sz. Szilágyi, “Investigating the Multipath Extension of the GRE in UDP Technology”, Computer Communications (Elsevier), vol. 103, no. 1, pp. 29-38, May 1, 2017, DOI: 10.1016/j.comcom.2017.02.002
  • Gábor Lencse, “Performance Analysis of MTD64, our Tiny Multi-Threaded DNS64 Server Implementation: Proof of Concept”, International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, vol. 5, no 2, pp. 116-121, DOI: 10.11601/ijates.v5i2.166
  • Gábor Lencse, András Gábor Soós, “Design, Implementation and Testing of a Tiny Multi-Threaded DNS64 Server”, International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, vol. 5. no. 2, pp. 68-78, DOI: 10.11601/ijates.v5i2.129
  • Lencse Gábor, Répás Sándor, Arató András: “IPv6 és bevezetését támogató technológiák”, (book about IPv6 and its transition technologies in Hungarian), HunNet-Média Kft., Budapest, 2015, ISBN: 978-963-12-3272-1, DOI: 10.18660/ipv6-b1.2015.9.1
  • G. Lencse and A. G. Soós, “Design of a Tiny Multi-Threaded DNS64 Server”, 38th International Conference on Telecommunications and Signal Processing (TSP 2015), Prague, Czech Republic, July 9-11, 2015, Brno University of Technology, pp. 27-32. DOI: 10.1109/TSP.2015.7296218