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Blog

Attack postmortems.
Engineering deep-dives.

Practical guides from engineers who've been DDoS'd and learned from it.

Mitigations

How to stop a DDoS attack on a Linux server

iptables and nftables rules, sysctl TCP hardening, fail2ban, and real-time detection with Flowtriq. Real commands for real attacks.

Mitigations

How to stop a DDoS attack on Nginx

Rate limiting, connection limits, slowloris mitigation, and application-layer DDoS controls for Nginx with pro...

14 min read →
Mitigations

How to stop a DDoS attack on Kubernetes

Network policies, ingress rate limiting, HPA considerations, cloud load balancer DDoS protection, and per-node...

15 min read →
Mitigations

How to protect gaming services against DDoS attacks

Practical implementation guide: network architecture, proxy setups, detection tuning, and auto-mitigation for ...

13 min read →
Mitigations

BGP FlowSpec for DDoS mitigation: how surgical filtering replaces blunt blackholes

FlowSpec lets you drop attack traffic at the network edge without blackholing legitimate users. How it works, ...

13 min read →
Mitigations

4-level auto-escalation: from local firewall to cloud scrubbing in seconds

Flowtriq's auto-escalation chain (iptables/nftables, BGP FlowSpec, RTBH, cloud scrubbing) explained step by st...

14 min read →
Mitigations

How to detect a SYN flood attack on your game server

Game servers face targeted SYN floods that exploit high-PPS traffic patterns. Detect them using kernel counter...

10 min read →
Mitigations

BGP FlowSpec vs RTBH: which mitigation method is right for your network

A detailed comparison of surgical FlowSpec filtering and destination blackholing. When to use each, real confi...

11 min read →
Mitigations

How to configure ExaBGP for RTBH

Complete guide to ExaBGP setup for programmatic RTBH route injection. BGP session config, community tagging, d...

14 min read →
Mitigations

iptables and nftables rules for DDoS mitigation: when and how

Production-ready firewall rules for SYN floods, UDP floods, ICMP floods, and connection exhaustion. When local...

14 min read →
Mitigations

SYN flood detection without a cloud WAF

You don't need Cloudflare or AWS Shield to detect SYN floods. The data you need is in /proc/net/snmp and your ...

8 min read →
Mitigations

UDP flood mitigation: techniques that actually work

UDP floods are the most common volumetric DDoS attack. Here are proven mitigation strategies from iptables rul...

11 min read →
Mitigations

BGP blackhole routing: RTBH for DDoS mitigation

When a volumetric DDoS attack threatens your entire network, BGP blackhole routing stops the flood at the netw...

10 min read →
Mitigations

iptables rules to survive a SYN flood while you wait for upstream mitigation

When you're under a SYN flood and upstream mitigation is still 20 minutes away, these iptables rules can buy y...

7 min read →

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