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Cyber Defence Lab
Fighting cyber threats through
research
and
education
cylab.be
Research
Education
A Practical Introduction to eBPF
Have you ever wanted to enhance your favorite distribution kernel with debugging, tracing, networking, security or plenty of other features without going through a long approval/testing/integration process managed by the Linux community? The extended Berkeley Package Filter (eBPF) is a Linux kernel feature that aims at running user-space code (eBPF programs) in the kernel, safely and efficiently, via the in-kernel eBPF machine. Let's discover how to build such programs.
Performance of virtual storage (part 2) : QEMU
In a previous blog post, I evaluated the performance penalty of virtual storage. I compared different host filesystems and different hypervisors (including QEMU). The conclusion was pretty harsh: in all tested configurations, virtual disks are almost 10 times slower than host drives. In this blog post, I will test additional QEMU configuration options, to see if I can get better results...
Webinar RMA
A few weeks ago, we had the opportunity to present a short webinar on two topics currently under research in our department: