Pi-Hole: Network-Wide DNS Security & Ad Blocking
Deployed Pi-Hole on Raspberry Pi 4 as a DNS-based ad blocker and network security layer. This project deepened my understanding of DNS architecture, caching strategies, network traffic filtering, fundamental concepts in cloud networking and security.
Technical Implementation & Skills
- DNS Architecture: Configured custom DNS resolver with upstream servers and conditional forwarding (directly applicable to Route53/Azure DNS)
- Network Security: Implemented DNS-level filtering and blocklists for threat protection (similar to AWS Network Firewall/Azure Firewall DNS proxy)
- Performance Optimization: Tuned DNS caching and query handling to reduce latency across network
- Monitoring & Analytics: Built dashboards to track DNS queries, blocked domains, and network patterns
- High Availability: Configured redundant DNS servers for failover and reliability