🇬🇧 English | 🇷🇺 Русский | 🇪🇸 Español | 🇩🇪 Deutsch | 🇫🇷 Français | 🇨🇳 中文 | 🇮🇳 हिंदी | 🇧🇷 Português | 🇹🇷 Türkçe | 🇮🇩 Bahasa Indonesia | 🇻🇳 Tiếng Việt | 🇰🇷 한국어

DNSBox is an open-source DNS server that allows you to issue free SSL certificates (Let's Encrypt) for any public IP address (IPv4 and IPv6) without owning a domain. Get HTTPS access to a server, API, or IoT device directly by IP.

• 🔐 Free SSL certificates from Let's Encrypt for IP addresses
• 🌐 Supports IPv4 and IPv6
• ⚡ Instant HTTPS access without DNS configuration
• 🔄 Automatic certificate renewal
• 💡 Works without a domain — use *.dnsbox.io subdomains
• 🧩 Compatible with WebSocket, APIs, and CI/CD pipelines
• ⚙️ Lightweight installer via shell script
• 📦 Minimal dependencies, single binary, zero-config launch

bash <(curl -sSL https://raw.githubusercontent.com/crypto-chiefs/dnsbox/main/scripts/install.sh) --ip=167.172.5.205 --domain=dnsbox.io --ns=ns3

Parameters:

• --ip — your public IP address (required)
• --domain — the root domain bound to the NS (e.g., dnsbox.io)
• --ns — nameserver subdomain (e.g., ns3)
• --force-resolv — disables systemd-resolved and sets 8.8.8.8
• --debug — enables verbose output

1. DNSBox launches a nameserver that serves A/AAAA and TXT records on the fly.
2. You get a subdomain like 167.172.5.205.dnsbox.io.
3. Let's Encrypt checks for a _acme-challenge TXT record and issues a certificate.
4. DNSBox automatically stores, renews, and serves the SSL certificate.

After installation, you can connect to your server over HTTPS:

curl https://167.172.5.205.dnsbox.io

Or test the SSL via OpenSSL:

openssl s_client -connect 167.172.5.205:443 -servername 167.172.5.205.dnsbox.io

• Language: Go
• DNS Library: miekg/dns
• TLS: standard crypto/tls
• ACME Client: built-in ACME support (no certbot)
• On-the-fly logic: all DNS queries and challenges are handled in memory

• 🔧 DevOps infrastructure without domains
• 📡 IoT devices with public IPs
• 🧪 Lab/staging environments
• 🚀 Fast API deployment without DNS
• 🔐 VPN/Proxy services requiring HTTPS

All Let's Encrypt challenge requests are served only during valid IP validation. TLS private keys are stored in /var/lib/dnsbox/certs.

Unlike existing services:

• DNSBox is a self-hosted open-source solution
• Deploy your own *.yourdomain.tld
• Supports IPv6, ACME, and certificates without third-party APIs

This project is licensed under the MIT License. Use it freely, fork it, extend it.

• 🌍 Project website: https://dnsbox.io/
• 📦 Installer: install.sh
• 📖 Documentation: in progress

⭐ If you find this project useful, please star it on GitHub!