RFC: Full mTLS for Diego Container-to-Container Traffic#1437
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RFC: Full mTLS for Diego Container-to-Container Traffic#1437
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Add draft RFC proposing implementation of full mutual TLS (mTLS) for container-to-container traffic in Diego. The proposal introduces a new HTTP-based listener on port 62443 alongside the existing TCP-based port (61443), providing a dual opt-in model for operators and app authors. Key features: - Phase 1: Server-side HTTP-based C2C mTLS with XFCC header forwarding - Phase 2: Client-side egress proxy for automatic cert injection - Phase 3: Full zero-trust app-to-app communication integration Maintains backwards compatibility with existing deployments.
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Summary
This RFC proposes implementing full mutual TLS (mTLS) for container-to-container (C2C) traffic in Diego, enabling applications to both authenticate themselves and verify the identity of connecting applications.
View the full RFC
The approach introduces:
Key Points
X-Forwarded-Client-CertheaderImplementation Phases
cc @cloudfoundry/toc @cloudfoundry/wg-app-runtime-platform