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  1. Free, publicly-accessible full text available July 1, 2023
  2. This paper describes a cloud infrastructure and virtual laboratories on P4 programmable data plane switches. P4 programmable data planes emerged as a technology that enables innovation in networking. P4 is a programming language used to describe how network packets are processed. This paper explains an entry-level training library on P4. The virtual laboratories introduce the learner to P4 and data plane concepts by providing step-by-step guides and exercises. The virtual laboratories are hosted in the Academic Cloud, a distributed platform that manages and orchestrates computing resources. Additionally, the paper describes a work in progress of P4 virtual laboratories that uses Intel Tofino switches. Lastly, the paper discusses the use of the Academic Cloud as a network testbed.
    Free, publicly-accessible full text available May 1, 2023
  3. One of the main roles of the Domain Name System (DNS) is to map domain names to IP addresses. Despite the importance of this function, DNS traffic often passes without being analyzed, thus making the DNS a center of attacks that keep evolving and growing. Software-based mitigation approaches and dedicated state-of-the-art firewalls can become a bottleneck and are subject to saturation attacks, especially in high-speed networks. The emerging P4-programmable data plane can implement a variety of network security mitigation approaches at high-speed rates without disrupting legitimate traffic. This paper describes a system that relies on programmable switches and their stateful processing capabilities to parse and analyze DNS traffic solely in the data plane, and subsequently apply security policies on domains according to the network administrator. In particular, Deep Packet Inspection (DPI) is leveraged to extract the domain name consisting of any number of labels and hence, apply filtering rules (e.g., blocking malicious domains). Evaluation results show that the proposed approach can parse more domain labels than any state-of-the-art P4-based approach. Additionally, a significant performance gain is attained when comparing it to a traditional software firewall -pfsense-, in terms of throughput, delay, and packet loss. The resources occupied by the implementedmore »P4 program are minimal, which allows for more security functionalities to be added.« less
    Free, publicly-accessible full text available April 25, 2023
  4. Free, publicly-accessible full text available April 1, 2023