redis-security: Security & Code Review for AI Agents | OpenAgentSkill

Overview

Redis security guidance covering authentication (requirepass and ACL users), TLS, ACL-based least-privilege access control, restricting network exposure via bind and protected-mode, firewall rules, and disabling dangerous commands. Use when deploying Redis to production, defining ACL users for an application, configuring TLS connections, locking down a Redis instance behind a firewall, or auditing a Redis deployment for security hardening.

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Redis Security

Production hardening for Redis: authentication, ACL-based access control, and network exposure. Cover all three together — any one of them on its own leaves an exploitable gap.

When to apply

Deploying or reviewing a Redis instance destined for production.
Setting up application credentials beyond a shared password.
Auditing a Redis deployment against a security checklist.
Receiving "Redis exposed to the internet" findings from a scanner.

1. Always authenticate (and use TLS)

Never run a production Redis without a password. Pair authentication with TLS so credentials and data aren't sent in clear text.

# redis.conf
requirepass your-strong-password
tls-port 6380
tls-cert-file /path/to/redis.crt
tls-key-file  /path/to/redis.key

r = redis.Redis(
    host="localhost",
    port=6380,
    password="your-strong-password",
    ssl=True,
    ssl_cert_reqs="required",
)

If you can use ACL users (next section) instead of the single requirepass, do — requirepass is effectively the legacy "default user" shortcut.

See references/auth.md.

2. ACLs for least-privilege access

The default user with a shared password is fine for development. For production, give each application a dedicated ACL user with only the commands and key patterns it actually needs.

# Cache-only reader
ACL SETUSER app_readonly on >password ~cache:* +get +mget +scan

# Writer that can't run dangerous ops
ACL SETUSER app_writer   on >password ~*        +@all -@dangerous

# Admin (use sparingly, never for application traffic)
ACL SETUSER admin        on >strong-password ~* +@all

Useful command categories:

Category	What it covers
`@read`	Read commands (`GET`, `MGET`, `HGET`, ...)
`@write`	Write commands (`SET`, `DEL`, `XADD`, ...)
`@dangerous`	`FLUSHALL`, `DEBUG`, `KEYS`, etc.
`@admin`	Administrative commands

If app credentials leak, a tight ACL bounds the blast radius — the attacker can't FLUSHALL your DB just because they grabbed a cache reader's password.

See references/acls.md.

3. Restrict network access

The most common Redis breach is a public-internet Redis with no auth. Avoid that with three layers:

# redis.conf — bind to specific interfaces, keep protected-mode on
bind 127.0.0.1 192.168.1.100
protected-mode yes

# Firewall — allow only application subnets
iptables -A INPUT -p tcp --dport 6379 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 6379 -j DROP

Anti-pattern: bind 0.0.0.0 + protected-mode no — exposes Redis to the whole network without protection.

Optional but recommended: rename or disable destructive commands so a compromised client can't trash the DB:

rename-command FLUSHALL ""
rename-command DEBUG ""
rename-command CONFIG ""

See references/network.md.

References

View source ↗

File metadata

name: redis-security
description: Redis security guidance covering authentication (requirepass and ACL users), TLS, ACL-based least-privilege access control, restricting network exposure via bind and protected-mode, firewall rules, and disabling dangerous commands. Use when deploying Redis to production, defining ACL users for an application, configuring TLS connections, locking down a Redis instance behind a firewall, or auditing a Redis deployment for security hardening.
license: MIT
metadata:
  author: Redis, Inc.
  version: "0.1.0"

View original text

---
name: redis-security
description: Redis security guidance covering authentication (requirepass and ACL users), TLS, ACL-based least-privilege access control, restricting network exposure via bind and protected-mode, firewall rules, and disabling dangerous commands. Use when deploying Redis to production, defining ACL users for an application, configuring TLS connections, locking down a Redis instance behind a firewall, or auditing a Redis deployment for security hardening.
license: MIT
metadata:
  author: Redis, Inc.
  version: "0.1.0"
---

# Redis Security

Production hardening for Redis: authentication, ACL-based access control, and network exposure. Cover all three together — any one of them on its own leaves an exploitable gap.

## When to apply

- Deploying or reviewing a Redis instance destined for production.
- Setting up application credentials beyond a shared password.
- Auditing a Redis deployment against a security checklist.
- Receiving "Redis exposed to the internet" findings from a scanner.

## 1. Always authenticate (and use TLS)

Never run a production Redis without a password. Pair authentication with TLS so credentials and data aren't sent in clear text.

```
# redis.conf
requirepass your-strong-password
tls-port 6380
tls-cert-file /path/to/redis.crt
tls-key-file  /path/to/redis.key
```

```python
r = redis.Redis(
    host="localhost",
    port=6380,
    password="your-strong-password",
    ssl=True,
    ssl_cert_reqs="required",
)
```

If you can use ACL users (next section) instead of the single `requirepass`, do — `requirepass` is effectively the legacy "default user" shortcut.

See [references/auth.md](references/auth.md).

## 2. ACLs for least-privilege access

The `default` user with a shared password is fine for development. For production, give each application a dedicated ACL user with only the commands and key patterns it actually needs.

```
# Cache-only reader
ACL SETUSER app_readonly on >password ~cache:* +get +mget +scan

# Writer that can't run dangerous ops
ACL SETUSER app_writer   on >password ~*        +@all -@dangerous

# Admin (use sparingly, never for application traffic)
ACL SETUSER admin        on >strong-password ~* +@all
```

Useful command categories:

| Category | What it covers |
|---|---|
| `@read` | Read commands (`GET`, `MGET`, `HGET`, ...) |
| `@write` | Write commands (`SET`, `DEL`, `XADD`, ...) |
| `@dangerous` | `FLUSHALL`, `DEBUG`, `KEYS`, etc. |
| `@admin` | Administrative commands |

If app credentials leak, a tight ACL bounds the blast radius — the attacker can't `FLUSHALL` your DB just because they grabbed a cache reader's password.

See [references/acls.md](references/acls.md).

## 3. Restrict network access

The most common Redis breach is a public-internet Redis with no auth. Avoid that with three layers:

```
# redis.conf — bind to specific interfaces, keep protected-mode on
bind 127.0.0.1 192.168.1.100
protected-mode yes
```

```bash
# Firewall — allow only application subnets
iptables -A INPUT -p tcp --dport 6379 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 6379 -j DROP
```

Anti-pattern: `bind 0.0.0.0` + `protected-mode no` — exposes Redis to the whole network without protection.

Optional but recommended: rename or disable destructive commands so a compromised client can't trash the DB:

```
rename-command FLUSHALL ""
rename-command DEBUG ""
rename-command CONFIG ""
```

See [references/network.md](references/network.md).

## References

- [Redis: Security](https://redis.io/docs/latest/operate/oss_and_stack/management/security/)
- [Redis: ACL](https://redis.io/docs/latest/operate/oss_and_stack/management/security/acl/)

Review the source

Skill source recorded

Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.

Review before install: Avoid automatic install

License: MIT

Dependency or permission surface needs review
Permission surface may require sandboxing
No critical issues found. The skill is purely informational and does not execute code or access external resources.
Quality score needs review
Permission surface needs review: secrets or environment access, shell or command execution
Stars/forks activity: 140 stars, 29 forks; issue activity unavailable in current metadata
Dependency/runtime risk: command execution surface, credential or environment access
Permission surface: secrets or environment access, shell or command execution

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Source & usage notes

Indexed

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Source repository: redis/agent-skills
License: MIT
Version: 1.0.0
Last GitHub push: Sep 1, 2026
Registry updated: Sep 6, 2026
Instruction path: plugins/redis-development/skills/redis-security/SKILL.md @ 172fb9effa13

Version reported in registry metadata; check source releases before relying on it.

Quality

69/100

Promising

Trust

61/100

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More details

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