CLIENT 10.0.0.55 Cortex Edge LOAD BALANCER Cortex Auth AUTHORITATIVE Cortex Filter FILTER Cortex Resolver RESOLVER A example.com? → 93.184.216.34 DNSSEC BLOCKED
Open Source AGPL-3.0 + Commercial

CortexDNS

Enterprise DNS Firewall

A protective DNS firewall that inspects and filters every query at the DNS layer — blocking malware, phishing, command-and-control and data-exfiltration domains before they resolve. Enterprise-grade DNSSEC validation, DDoS protection with intelligent rate limiting, threat-feed-driven filtering, role-based access control, SIEM integration, real-time analytics and DNS over TLS.

DNSSEC DoH / DoT Threat-Feed Driven SIEM-Ready High Availability

Core Features

Every query inspected and filtered at the DNS layer — one protective firewall for the whole network.

DNS-Layer Threat Blocking

Cortex Edge and Cortex Filter inspect every query and block malicious domains network-wide before they resolve, driven by live threat intelligence from Batin.

DNSSEC & DDoS Protection

Automated DNSSEC key management and zone signing. Built-in DDoS mitigation with intelligent rate limiting, query throttling, and threat detection via Cortex Edge.

DNS Filtering

Cortex Filter provides network-wide ad blocking, malware domain filtering, and content categorization. Custom blocklists and whitelists with granular control.

RBAC & SSO

Cortex IAM provides standards-based single sign-on. Fine-grained role-based access control for zones, records, and administrative functions.

SIEM Integration

Native integration with enterprise security platforms. Export DNS logs and events to your SIEM for centralized security monitoring.

Real-Time Analytics

Cortex Analytics engine with query classification, response time tracking, geographic distribution, and trend analysis dashboards for complete DNS visibility.

Architecture

Purpose-built DNS components unified under a single management layer.

Cortex Auth

High-performance authoritative DNS engine. Handles zone serving, DNSSEC signing, ALIAS records, and supports all standard DNS record types with relational database backend.

Cortex Edge

DNS-aware edge gateway and traffic director. Provides rate limiting, query routing, DoT/DoH termination, and DDoS protection at the DNS protocol level.

Cortex Filter

Network-level threat and content filtering engine. Blocklist management, query logging, client group policies, and DNS sinkholing for security and content control.

Cortex Resolver

Recursive DNS resolver with DNSSEC validation. Handles upstream resolution, intelligent caching, and serves as the backbone for internal DNS queries.

Cortex IAM

Enterprise identity and access management module. Standards-based authentication, user federation, role management, and single sign-on for the management UI.

Cortex Analytics

High-performance analytics engine for DNS query logs. Enables real-time dashboards, query pattern analysis, and long-term trend storage at massive scale.

Yüksek Erişilebilirlik Kümesi

30 saniyenin altında otomatik yük devri ile 3 düğümlü aktif-pasif küme. Tek hata noktası yok.

Database HA

Patroni + etcd

RAFT konsensüs ile streaming replikasyon. 30 saniyenin altında otomatik lider seçimi ve yük devri. Senkron commit ile sıfır veri kaybı.

< 30sn yük devri

DNS Replikasyon

Master / Slave AXFR

Cortex Auth master-slave replikasyonu, AXFR zone transferi ve NOTIFY propagasyonu. Master çökse bile slave'ler DNS servisi vermeye devam eder.

< 60sn propagasyon

Sanal IP Yük Devri

Keepalived VRRP

Web ve DNS trafiği için çift Sanal IP, sağlık kontrolü tabanlı yük devri. İstemciler düğüm çökmesini fark etmez.

< 3sn yük devri

IAM Kümesi

JDBC_PING Keşfi

Cortex IAM sunucuları JDBC keşfi ile kümelenir, dağıtık oturum önbelleği kullanır. Multicast veya harici koordinasyon gerekmez.

< 10sn yük devri

Cache HA

Çoğunluk Tabanlı Seçim

Çoğunluk tabanlı master seçimi ile üç düğümlü önbellek katmanı. Otomatik replika terfi ile önbellek sürekliliği sağlanır.

< 30sn yük devri

Filtre Senkronizasyonu

Orbital Replikasyon

Cortex Filter engel listeleri ve yapılandırması her 5 dakikada tüm düğümler arasında senkronize edilir. Her düğümde tutarlı filtreleme politikası.

5 dk senkronizasyon
3 Düğüm
<30sn Yük Devri
0 Tek Hata Noktası
RAFT Split-Brain Koruması

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