The box's compose got these during the security audit and the repo copy
did not, so a rebuild from the repo would have undone them:
- Redis requires a password (FN_REDIS_PASSWORD, written to a config file
inside the container; healthcheck via REDISCLI_AUTH); FN_REDIS_URL
carries it.
- The internal network is internal: true, so the database and Redis have
no route off the box. The relay reaches S3 and APNs through web.
- relay, redis and obfs4bridge drop every capability; db keeps the five its
entrypoint needs. All four set no-new-privileges.
- obfs4bridge is on web only.
.env.example documents FN_REDIS_PASSWORD. The deploy itself uses the
box's compose, so this changes nothing that is running.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>