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feat: add Kubernetes multiplayer security baseline

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Josh Creek
2026-08-31 21:21:55 +01:00
parent 79e66c7a95
commit 88b5ffedb2
9 changed files with 236 additions and 4 deletions
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multiplayer-todo.md
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@@ -1184,7 +1184,7 @@ the local/CI/community transport, not a silent production fallback.
| 8.9 `[D:8.4,8.7]` | **IN PROGRESS.** Pure Go join policy binds SteamID/player/match/server/team/slot/protocol/expiry, rejects duplicate roster slots, permits same-identity reclaim through backend loss and fences prior server-owned generations | `server/domain/reconnect.go` covers SteamID/server/slot binding, expiry, repeated reclaim, grace boundary and old-generation fencing; signed token issuance/verification, persistent leases, Godot `hello` transport and production integration remain |
| 8.10 `[D:8.5,8.31]` | **IN PROGRESS.** Dependency-free workload credential policy validates an adapter-verified signature, issuer/audience/time bounds, namespace/service account, pod UID, GameServer UID, allocation ID, match ID and server ID before result submission | `server/domain/workload.go` and adversarial tests reject every binding mutation, missing/unverified signature and time boundary; `server/testkit/pipeline_test.go` carries allocation identity through the offline result path; projected-token/JWT adapter, trusted-cluster verification and live duplicate/conflict alerting remain |
| 8.11 `[D:8.1]` | **DONE.** Write the threat model: forged clients/replay/queues/results, floods/bots, pod/insider compromise, gameplay and API DDoS, SDR signing-key theft, dependencies and denial-of-wallet | [`docs/THREAT-MODEL.md`](docs/THREAT-MODEL.md) records prevention, detection/response, owner and residual risk for every threat; it separates offline CA/online signer, client/game-server/PostgreSQL/Redis trust boundaries and recovery behavior |
| 8.12 `[D:8.11]` | Harden workloads and edge: restricted containers, least RBAC, private DB/Redis, default-deny networks, backups/secrets, volumetric DDoS/WAF/origin shielding, WebSocket limits and overload shedding | Policy/network tests enforce declared flows; edge load test preserves result ingress/live matches while rejecting new work; no credential appears in Git/images/args/telemetry |
| 8.12 `[D:8.11]` | **IN PROGRESS.** Provider-neutral Kubernetes baseline enforces restricted namespace admission, non-root/read-only/no-capability workloads, separate service accounts, allocator-only RBAC, default-deny networking and explicit edge/data/DNS/Agones flows; application manifests consume externally populated Secret objects | `deploy/k8s/base/` plus `server/security/test_kubernetes_policies.py` cover the static hardening and secret-reference invariants; private-store provisioning, edge DDoS/WAF/origin shielding, WebSocket limits, overload shedding, encrypted backups and live policy/load tests remain |
| 8.13 `[D:8.12]` | Pin images by digest; generate SBOMs, scan dependencies/images, sign artifacts, verify signatures at admission and document a critical-fix SLA | CI blocks a vulnerable/disallowed or unsigned release artifact and records the exact provenance deployed |
#### 8C — Queueing, matchmaking, playlists and rating