mTLS Implementation
TLS encrypts traffic. Mutual TLS (mTLS) also authenticates both sides — the client proves its identity to the server and vice versa. We implement mTLS for your service-to-service communication so every internal request is both encrypted and authenticated, eliminating entire classes of lateral movement attacks.
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Certificate Infrastructure
mTLS requires every service to have a certificate. We deploy a private CA — Vault PKI, cert-manager, or SPIFFE/SPIRE — that issues short-lived certificates (hours, not years) to workloads automatically. Short-lived certs eliminate the need for revocation (CRL/OCSP) infrastructure. Certificate issuance and rotation happen without service restarts via sidecar proxies or filesystem watches.
Service Mesh Integration
Istio or Linkerd provides transparent mTLS between pods — no application code changes. The sidecar proxy handles TLS termination, certificate rotation, and peer verification. Strict mode rejects any non-mTLS traffic. Authorization policies (which service can call which service) build on the authenticated identity from the mTLS handshake. You get encryption and authentication without touching application code.
Migration Strategy
We migrate from plaintext to mTLS incrementally. Permissive mode accepts both plaintext and mTLS traffic — no big-bang cutover. Service-by-service migration with monitoring confirms each service communicates correctly over mTLS. Once all services are migrated, strict mode enables and plaintext traffic gets rejected. The entire migration is observable and reversible at every step.
Debugging & Observability
mTLS adds a layer of complexity to debugging. We configure detailed TLS error logging, certificate chain inspection tools, and service mesh dashboards showing mTLS handshake success/failure rates per service pair. Common issues (expired CA, misconfigured SAN, clock skew) get documented in runbooks. Your team can diagnose mTLS issues without becoming TLS experts.
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