Separate proxy interception from origin TLS failure
Certificate failures on one network are blamed on the origin service.
- Focused work estimate
- 3h + prerequisites
- Priority in the scenario
- High
- Engineering practice
- TLS · Network troubleshooting
Estimated field mix
- Networking60%
- Security40%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
A fictional desktop sync client works on one office network but intermittently fails on another. Application retries hide whether DNS, IPv6, or transport limits are responsible.
Setup prerequisites
- Author synthetic packet traces and local IPv4/IPv6 endpoint doubles; use no third-party scanning or captured personal traffic.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
Acceptance criteria
- Compare expected peer identity with observed chain metadata.
- Record proxy configuration source safely.
- Keep unknown interception explicitly unresolved.
Implementation constraints
- Never recommend disabling TLS verification.
Verification to include
- Identify the modeled local proxy certificate.
- Distinguish a wrong-origin certificate from an unreachable origin.
Deliverables
- TLS path diagnostic.
Rollout and recovery
Keep failed connections closed while investigating trust configuration.
Value of the work
For the engineer: Practice layered network diagnosis and reproducible troubleshooting.
For the team: Produce precise support diagnostics that distinguish application defects from connectivity conditions.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.