Security — ACL, TLS, and Network Controls

What you'll walk away with

Explain the core ideas behind Security — ACL, TLS, and Network Controls
Run the sample Redis command or code and verify its output
Apply the technique correctly to the Tutorial Platform and production scenarios

Build the mental model

Redis should not be exposed to the public internet. Use private networking and firewalls, TLS transport, ACL users, strong rotated credentials, and restrictions on dangerous commands. ACL rules can limit command categories and key patterns; give each application or service its own identity.

Connect it to a real scenario

Allow the web API user only required commands on `tutorial:*` and `session:*`; allow the worker only stream commands. Enable TLS certificate verification, source credentials from a secret manager, test dual-credential rotation, and inspect the ACL log.

Never expose Redis publicly
Give each service an ACL identity
Verify TLS and rotate secrets

Try the working example

shell

ACL SETUSER tutorial-api on >strong-rotated-secret ~tutorial:* ~session:* +@read +@write -@dangerous
ACL LIST
ACL GETUSER tutorial-api
ACL LOG 10

# redis-cli --tls --cacert ca.crt --user tutorial-api --askpass

You should see

You get a scoped application identity and an audit trail for ACL denials.

5-minute try-it

Write a least-privilege ACL rule for a read-only analytics service.

One important caution

Do not treat command renaming as the security boundary; network, TLS, ACL, and secret controls all matter.

Redis — TLS — Redis

Easy traps

Do not treat command renaming as the security boundary; network, TLS, ACL, and secret controls all matter.
Validate sample commands on a local or test instance with recoverable data before applying them to production Redis.

Exercise

Write a least-privilege ACL rule for a read-only analytics service.

You'll know it worked when: You get a scoped application identity and an audit trail for ACL denials.