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Global DNS service with performance, security, and flexibility features

Core Idea: Cloudflare DNS is a managed Domain Name System service that provides authoritative DNS hosting with enhanced security, performance optimizations, and additional features like DDNS capability, analytics, and DDoS protection.

Key Elements

Key Features

• Free and premium DNS hosting
• Global anycast network (270+ data centers)
• DDoS protection
• DNS-level security filtering
• DNSSEC support
• Load balancing capabilities
• Dynamic DNS API support
• Analytics and logging

Technical Specifications

• Anycast DNS resolution
• Average 11ms global query speed
• 100% uptime SLA (Enterprise)
• IPv4 and IPv6 support
• API for automation and integration
• All standard DNS record types supported
• DNS over HTTPS (DoH) and DNS over TLS (DoT)
• Proxy functionality for additional security

DNS Management Features

• Web-based control panel
• Bulk record management
• Import/export zone files
• Multi-user access controls
• DNS templates
• API-driven configuration
• CNAME flattening
• Wildcard support

Implementation Steps

1. Create a Cloudflare account
2. Add a domain to Cloudflare
3. Update nameservers at your registrar
4. Configure DNS records:

Basic DNS Configuration

Type Name Value TTL Proxy Status A @ 203.0.113.10 Auto Proxied CNAME www example.com Auto Proxied MX @ mail.example.com Auto DNS Only TXT _dmarc v=DMARC1; p=reject; Auto DNS Only

Dynamic DNS Implementation

Using Cloudflare as a DDNS provider with API:

#!/bin/bash
# Cloudflare Dynamic DNS Updater

# Configuration
AUTH_EMAIL="your-email@example.com"
AUTH_KEY="your-global-api-key"
ZONE_ID="your-zone-id"
RECORD_ID="your-dns-record-id"
RECORD_NAME="dynamic.example.com"

# Get current IP
IP=$(curl -s https://api.ipify.org)

# Update DNS record
curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RECORD_ID" \
     -H "X-Auth-Email: $AUTH_EMAIL" \
     -H "X-Auth-Key: $AUTH_KEY" \
     -H "Content-Type: application/json" \
     --data "{\"type\":\"A\",\"name\":\"$RECORD_NAME\",\"content\":\"$IP\",\"ttl\":1,\"proxied\":false}"

Additional Services

• Cloudflare Proxy: Security and performance enhancement
• Page Rules: URL-specific settings and redirects
• Cloudflare Workers: Edge computing platform
• SSL/TLS Management: Certificate provisioning and management
• Firewall Rules: Traffic filtering at DNS level
• Rate Limiting: Protection against brute force attacks
• Load Balancing: Distribute traffic across origins

Additional Connections

• Broader Context: DNS Services (Cloudflare is a provider)
• Applications: Website Security, Content Delivery
• See Also: Dynamic DNS, CDN Services, DDoS Protection

References

1. Cloudflare DNS documentation: https://developers.cloudflare.com/dns/
2. Cloudflare Dynamic DNS API: https://api.cloudflare.com/

#dns #cloudflare #networking #security #web-infrastructure

Connections:

Sources:

• From: Worklog n8n