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Originally recorded September 13, 2017 Whether you build your own Bro cluster or you use a commercial Bro appliance, most of the existing Bro deployments have traditionally focused on physical hardware infrastructure. In this talk we plan to share our experiences on running Bro in the cloud. Specifically, our talk will cover the following three areas: Tapping traffic in the cloud efficiently. This will include descriptions and demonstrations of recent cloud based tapping infrastructure developments including Tap as a Service (TaaS) used in OpenStack deployments or Gigamon Visibility Platform for Amazon AWS. Accelerating the data path in the VM. While hardware solutions to accelerate the data path are well-known (e.g., Myricom, PF_RING, netmap, AF_PACKET, etc.), in this segment we will describe architectures and workflows to efficiently deliver packets to Bro in a virtualized environment, including features such as receive-side scaling (RSS), BPF filters, and virtual switch load balancing. Measuring performance. When working in a virtual environment packets flow through many stages of a pipeline containing both physical and virtual components which can impact both performance and correctness. One advantage of cloud scale processing comes with elasticity and the ability to expand or contract processing elements when needed. The key question then is how and where to measure packet processing throughout the pipeline to determine if packets are being dropped and hence the need to increase processing resources. To facilitate a productive open discussion, our presentation will include both descriptions of the various workflows and architectural frameworks, putting emphasis on the various trade-offs found in each of the above mentioned components, as well as a live (or recorded) demonstration of running Bro in the cloud. Slides: https://www.bro.org/brocon2017/slides...