Beyond the Castle-and-Moat Security Model
Traditional network perimeters assumed that everything inside the corporate firewall was implicitly trusted. Modern security architectures enforce Zero Trust: Never Trust, Always Verify.
Fundamentals of TLS 1.3 & WireGuard Cryptography
- TLS 1.3 Handshake Optimization: Reduces handshake round-trips from 2-RTT to 1-RTT (and 0-RTT resumption) while removing legacy vulnerable cipher suites.
- Noise Protocol Framework: WireGuard's implementation uses ChaCha20 for symmetric encryption, Poly1305 for authentication, and Curve25519 for ECDH key exchange.
- Micro-Segmentation: Enforcing least-privilege packet routing between web servers, database clusters, and management controllers.
