Kernel Networking

The Linux network stack from socket to wire, plus the high-performance paths that bypass parts of it when you need line rate.

6 courses · available in all eight cities and live online

The stack3 courses

NET-1013 days Network Stack Architecture The path a packet takes through the kernel, which is the map you need before tuning or debugging anything. Practitioner Practitioner-taught SAR 7,880Next 18 Oct NET-1103 days Socket Layer & Protocol Handling TCP and UDP implementation details that explain the behaviour you see on the wire. Advanced Practitioner-taught SAR 9,000Next 22 Nov NET-1203 days netfilter & nftables Packet filtering and NAT as implemented, not as configured by copying rules from the internet. Practitioner Practitioner-taught SAR 7,880Next 1 Nov

High performance3 courses

NET-2014 days XDP & eBPF Networking Processing packets at the driver level for filtering, load balancing and DDoS mitigation at line rate. Advanced Practitioner-taught SAR 12,000Next 8 Nov NET-2103 days DPDK & Kernel Bypass When to leave the kernel network stack entirely, and what you give up when you do. Advanced Practitioner-taught SAR 9,000Next 25 Oct NET-2203 days Traffic Control & QoS Shaping, scheduling and prioritising traffic with tc, including the modern queue disciplines. Advanced Practitioner-taught SAR 9,000Next 11 Oct