Hands-on guides, incident reports, benchmarks and XDP / nftables tutorials for ops who run in production.
XDP attached but traffic slips through? This checklist covers interface binding, map state, hook conflicts and verifier traps to find the root cause fast.
Write your first XDP program to drop packets on a specific port at wire speed, before the kernel stack processes a single byte.
Fail2ban is no longer enough against SSH brute force in 2026. Learn which kernel-level and nftables-based controls actually stop credential …
Mirai and IoT botnets repeat known traffic patterns. Learn how XDP identifies and drops them at the NIC level before they saturate your serv…
Slowloris kills servers without flooding bandwidth. Learn how nftables conntrack rules detect and terminate slow connections at the kernel l…
UDP amplification attacks overwhelm userspace tools. Kernel-level rate limiting intercepts floods before they cost CPU — here is what change…
SYN floods bypass classic firewalls by exhausting conntrack. This guide shows how XDP intercepts and drops malicious SYN packets at line rat…
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…
Past 100 nftables rules, chaos sets in. Learn how to structure sets, chains, and named variables to stay in control at scale without rewriti…
Centralize firewall logs across Linux servers without ELK. Discover lightweight, production-ready pipelines that parse, aggregate, and alert…
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…
Learn to monitor nftables counters in production: track packets, bytes, and drop rates to detect firewall anomalies before they impact your …
Map your inbound traffic by country and ASN to expose real attack sources. GeoIP visualization turns raw packet data into actionable firewal…
Find which IPs are flooding your server in real time with kernel-level tools, XDP counters and nftables — before your conntrack table hits t…
Managing IP blacklists across a VPS fleet without drift is hard. This guide covers modern sync strategies: shared nftables sets, eBPF maps, …
Pushing firewall rules to 10 servers one by one is a liability. Learn how to centralize firewall management and enforce consistent policies …
SYN floods can crash a 7 Days to Die server in seconds. This guide covers kernel-level defenses with nftables and XDP to absorb attacks with…
A self-hosted Valheim server is a visible target. Learn how to lock down your Linux host, filter rogue traffic and keep your world online un…
UFW, firewalld, or nftables on Debian? This breakdown compares rule syntax, kernel overhead, and ops flexibility to help you pick the right …
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…
Lua exploits and connection floods are the top threats to GMod servers. Learn how to apply kernel-level defenses and rate limiting to stay o…
Cloud DDoS protection or on-server filtering with XDP/nftables? Compare both approaches on latency, cost, control, and real-world mitigation…
From misconfigured SSH to missing firewall rules, discover the 7 most critical Linux VPS security mistakes ops teams make in 2026 and how to…
Deep dive into conntrack TCP state tracking on Linux: how the kernel maps TCP flags to connection states and how to leverage them in nftable…
eBPF shifts security enforcement into the Linux kernel itself. Discover why sysadmins and ops teams are replacing legacy firewalls with eBPF…
UDP floods, spoofed packets, game-layer exploits: how to harden an ARK Survival Ascended server with XDP, eBPF and nftables firewall rules.
Classic firewalls and basic anti-DDoS are blind to modern FiveM RP attack vectors. Find out why XDP/eBPF-based filtering is now the baseline…
WAF vs kernel firewall: which layer best protects a game server? Compare filtering depth, latency impact and DDoS resistance at L4 vs L7.
Learn to detect a DDoS attack on your VPS in under 30 seconds using Linux CLI tools, traffic counters, and kernel-level indicators.
Step-by-step guide to implementing per-IP rate limiting with nftables: meters, dynamic sets, and practical rules to enforce traffic caps on …
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…
Dedicated DayZ servers are prime DDoS targets. Discover how to block attacks at kernel level with XDP and nftables to keep your community ru…
Learn how to harden Pelican panel nodes hosting FiveM, Minecraft, and Rust using nftables, XDP filtering, and Linux network isolation techni…
OVH, Hetzner, Scaleway: detailed comparison of DDoS protection offered by each host in 2026 — filtering capacity, latency and real-world lim…
Cloudflare or kernel firewall for DDoS protection? Understand the tradeoffs in filtering depth, latency, and control to choose the right sta…
10 battle-tested nftables rules for game server admins: conntrack, rate limiting, port whitelisting and layer 4 DDoS mitigation in one check…
Learn how XDP enables blocking millions of packets per second at kernel level with eBPF programs for ultimate DDoS protection performance.
Examining free Minecraft DDoS protection options in 2026: what actually works at kernel level versus provider marketing claims and service l…
Learn kernel-level DDoS mitigation techniques for Rust game servers using XDP/eBPF and nftables to maintain stable performance under attack.
Learn how to implement per-server DDoS protection in Pterodactyl using XDP/eBPF kernel filtering for optimal game server security and perfor…
Essential security checklist to protect OVH VPS infrastructure from DDoS attacks using modern kernel-level filtering techniques and proven m…
Technical comparison of fail2ban, CrowdSec and kernel protection methods for blocking malicious IPs on Linux servers in 2026.
Step-by-step migration guide from iptables to nftables for Linux administrators, covering rule conversion and performance optimization strat…
XDP processes packets at driver level before kernel stack, enabling sub-microsecond filtering for DDoS protection and high-performance netwo…
Complete technical guide to implement XDP/eBPF DDoS protection for FiveM servers with kernel-level filtering and automated threat response.
Critical steps to protect your Minecraft server during a DDoS attack using XDP, nftables, and upstream filtering for immediate threat mitiga…