Time: 13:15 - 14:00
Room: Stream 2
All times are based on Ottawa time, which is UTC -4. For example, 9AM is 1400 UTC.
Packet classification and filtering at and above 10 Gbps speeds is today mainly a realm of proprietary equipment vendors, as traditional software firewalls struggle to forward more than a few million packets per second. In this talk we'll present RFPF, a software packet filtering datapath which forwards 44 Mpps (limited by PCIe bus speed) on a commodity CPU, while doing multiple longest prefix matching lookups in large datasets (such as GeoIP, blacklists, or full-view BGP snapshots) per each packet. Our goal is to provide filtering functionality and capacity suitable for scrubbing / dampening large-scale volumetric DDOS attacks, while still being reasonably flexible for (fast) general-purpose firewalling applications. We'll describe how the prototype is constructed: a multithreaded, lockless userspace datapath coupled with a modern LPM lookup scheme, with packet I/O going through netmap, and of course, running on FreeBSD.