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DCA Hardened Secrets Manager — for OpenBao™ — security notes

Network exposure

PortPurposeState
22SSH — key-only, OS Login (IAM); the deployment package adds no SSH ruleyour VPC's firewall rules
8200OpenBao API + UI, TLS (per-VM certificate) — bound to 127.0.0.1customer-must-open (config + firewall toggle)
8201Cluster port — 127.0.0.1 (single node)loopback only

"customer-must-open" means a cloud firewall rule and, where noted, an in-image configuration change — both deliberate. Closed by default is the design.

Shared responsibility

We maintainThe hardened image: package selection, hardening baseline, CVE rebuilds, listing freshness, and these docs.
You controlThe running instance: OS patching between image versions, network exposure, IAM, data, and backups.
Your cloud providesPhysical/hypervisor security, marketplace billing, and the firewall primitives this design relies on.

OpenBao™ names the open-source software this image packages. Derek Coleman & Associates Inc is not affiliated with or endorsed by the OpenBao project.