Debugging an XDP Program That Doesn't Match: Complete Checklist
XDP attached but traffic slips through? This checklist covers interface binding, map state, hook conflicts and verifier traps to find the ro…
October 19, 2026 · 10 min
How to Write Your First XDP Rule to Block a Port in 2026?
Write your first XDP program to drop packets on a specific port at wire speed, before the kernel stack processes a single byte.
October 16, 2026 · 9 min
Mirai and IoT Botnets: Blocking Their Patterns with XDP
Mirai and IoT botnets repeat known traffic patterns. Learn how XDP identifies and drops them at the NIC level before they saturate your serv…
October 10, 2026 · 11 min
SYN flood: understanding and mitigating the attack with XDP in 2026
SYN floods bypass classic firewalls by exhausting conntrack. This guide shows how XDP intercepts and drops malicious SYN packets at line rat…
September 30, 2026 · 11 min
XDP without the headache: managing 100 rules without reloading the kernel
Scaling XDP to 100 rules without kernel reloads is possible. Learn how to update BPF maps live and keep your firewall running with zero down…
September 28, 2026 · 9 min
Monitoring an XDP program in production: BPF stats, counters, and drop rate
No visibility on your XDP program means silent drops. Learn to expose BPF stats, per-rule counters, and real-time drop rate in production Li…
September 19, 2026 · 10 min
XDP vs iptables: which filters faster on Debian 12 in 2026?
iptables vs XDP on Debian 12: a raw performance comparison showing which solution holds under flood and at what packet-per-second cost on re…
August 11, 2026 · 8 min
Rate-limiting an IP at the kernel level with XDP and eBPF: complete tutorial
Step-by-step tutorial to enforce per-IP rate limiting at kernel level with XDP and eBPF — drop excess packets before they hit the Linux netw…
July 3, 2026 · 8 min
How to block several million packets per second with XDP?
Learn how XDP enables blocking millions of packets per second at kernel level with eBPF programs for ultimate DDoS protection performance.
June 6, 2026 · 12 min
XDP explained simply: why does Linux filter before the kernel in 2026?
XDP processes packets at driver level before kernel stack, enabling sub-microsecond filtering for DDoS protection and high-performance netwo…
May 10, 2026 · 11 min