171 TLS and mTLS Deep Dive

171 TLS and mTLS Deep Dive

TLS provides confidentiality and integrity. mTLS additionally provides strong client identity at transport level.

Trust Model

client verifies server cert chain
server verifies client cert chain (mTLS)

Production Controls

• Enforce minimum TLS version.
• Use managed certificate issuance/rotation.
• Monitor certificate expiry and validation failures.

Operational Reality

Most TLS incidents are not cryptographic failures; they are lifecycle failures (expired certs, mismatched trust bundles, incomplete rotation).