Security¶
Secure your Bindy DNS infrastructure against threats and unauthorized access.
Security Layers¶
1. Network Security¶
- Firewall rules limiting DNS access
- Network policies in Kubernetes
- Private networks for zone transfers
2. Access Control¶
- Query restrictions (allowQuery)
- Transfer restrictions (allowTransfer)
- RBAC for Kubernetes resources
3. DNSSEC¶
- Cryptographic validation
- Zone signing
- Trust chain verification
4. Pod Security¶
- Pod Security Standards
- SecurityContext settings
- Read-only filesystems
Best Practices¶
- Principle of Least Privilege - Minimal permissions
- Defense in Depth - Multiple security layers
- Regular Updates - Keep BIND9 and operator updated
- Audit Logging - Track all changes
- Encryption - TLS for management, DNSSEC for queries
Quick Security Checklist¶
- Enable DNSSEC for public zones
- Restrict allowQuery to expected networks
- Limit allowTransfer to secondary servers only
- Use RBAC for Kubernetes access
- Enable Pod Security Standards
- Regular security audits
- Monitor for suspicious queries
- Keep software updated
Next Steps¶
- DNSSEC - Enable cryptographic validation
- Access Control - Configure query and transfer restrictions