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Open Source Summit + Embedded Linux Conference North America... has ended
May 18-20, 2026
Minneapolis, MN
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Verified Debian Packaging at Scale - Frederick Lawler, Cloudflare
Monday May 18, 2026 5:25pm - 6:05pm CDT
200G (Level Two)
Cloudflare’s global network relies on Debian Linux machines across 330+ cities. To enhance production security we wanted to ensure that our servers can only run authorized software. For this we leverage Linux Kernel's IMA-Measurement to validate binary signatures before execution. Our system encompasses first-party software, Docker containers, and open-source Debian packages.

This talk illustrates how we successfully injected digital signatures into every Debian package installed on our fleet. This involved deep dives into the Linux Kernel, modifying dpkg, and building a mirroring system that could sign upstream repositories. Learn about our journey enhancing software integrity on a massive scale. This session is ideal for those interested in Linux security, package management, and Internet-scale system administration.
Speakers
avatar for Frederick Lawler

Frederick Lawler

Systems Engineer, Cloudflare
Fred is a backend web developer turned kernel developer. He previously focused on the PCIe subsystem since 2018 as a hobbyist. Now he works for Cloudflare on the Linux team with a focus on securing systems and production reliability.
2026 OSS NA Slides pdf
Monday May 18, 2026 5:25pm - 6:05pm CDT
200G (Level Two)
  Packages + Images + Containers
  • Audience Experience Level Advanced
  • Slides Attached Yes

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