Date：2025/6/26（四）10:30am
Location：R210, CSIE
Speakers：Dr. Taejoong (Tijay) Chung, Associate Professor, Virginia Tech
Host：蕭旭君教授
Abstract:
The Border Gateway Protocol (BGP) is the Internet's "navigation system", steering traffic across thousands of autonomous networks. Because BGP was never built with strong authentication, attackers can—and regularly do—inject bogus IP-prefix advertisements, diverting or black-holing traffic. To close this gap, the Internet Engineering Task Force introduced the Resource Public Key Infrastructure (RPKI) in 2008, enabling cryptographic validation of route origins.
This talk explains RPKI from first principles and traces its uptake in the "operational community". I will explore:
* How Route Origin Authorizations (ROAs) are created and published, and how routers apply Route Origin Validation (ROV) in real time.
* Deployment experiences from large transit providers, CDNs, and enterprise networks, highlighting common pitfalls and best practices.
* Measurement techniques that reveal global RPKI coverage, policy misconfigurations, and the impact of recent outages.
* The policy push from regulators—most notably the U.S. FCC's proposed requirement that broadband providers file BGP Routing Security Risk Management Plans—and what this means for network operators.
* Open research and engineering challenges, including scaling validation to signed ASPA/AS-path protection, automating key rollover, and improving transparency of the RPKI trust hierarchy.
Speaker Bio：
Tijay Chung is an Associate Professor at the Computer Science department at Virginia Tech and Adjunct Professor at the Computer Science department at POSTECH. He received his Ph.D. in Computer Science and Engineering from Seoul National University in 2015. His work focuses on Internet security, privacy implications, and Internet measurement. He received the NSF CAREER Award (2024) and NSF CRII Award (2019). He also received Outstanding New Assistant Professor at the College of Engineering, Virginia Tech (2024). He was a Mentor at Mutually Agreed Norms for Routing Security (MANRS), Internet Society in 2023. He received the ACM CCS Best Paper Honorable Mention Award (2022), IRTF Applied Networking Research Prize (2019), ACM IMC Distinguished Paper Award (2019), and USENIX Security Distinguished Paper Award (2017).