How to Set Up a Daily Security Audit Cron Job in OpenClaw

You locked everything down. Changed the port, enabled Tailscale, installed Fail2ban, set up UFW. Felt good. Then two weeks later, a package update quietly changed something. Or you added a new integration and forgot to scope-limit it. Or the daily backup cron stopped running and you never noticed.

One-time hardening isn't enough. OpenClaw security cron jobs are how you make sure everything stays locked down — automatically, every morning, while you drink your coffee.

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Why Configuration Drift Is the Real Threat

Most people get hacked not because their initial setup was wrong, but because something changed after setup. Examples:

• A software update modifies /etc/ssh/sshd_config
• A new service opens a port that wasn't in your UFW rules
• Someone accidentally regenerated the gateway config with default settings
• Fail2ban stopped because of a system restart without proper enabling
• File permissions on openclaw.json got reset after a copy operation

A daily security audit cron job catches all of these automatically. You don't need to remember to check. The bot checks itself and reports to you.

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OpenClaw's Built-In Cron Scheduling

OpenClaw has a native cron scheduling system. You don't need external tools, Linux crontabs, or custom scripts — your agent can create and manage its own scheduled tasks via a simple message.

The syntax is conversational. You tell your bot what to check and when to run it. It handles the scheduling internally.

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Setting Up the Daily Audit

Send this exact prompt to your OpenClaw bot:

Set up a daily cron job that runs a full security audit every morning at 9am. Check: firewall status, fail2ban, SSH config, file permissions, open ports, Docker status, and report any issues. Message me the results every day.

Your bot will confirm when the cron job is created. Starting the next morning at 9am, it runs automatically.

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What the Audit Should Cover

When setting up or extending your OpenClaw security cron, make sure the audit covers these seven areas:

1. Firewall Status

sudo ufw status verbose

The audit should confirm UFW is active, default incoming is deny, and only expected ports are open (SSH, custom OpenClaw port if applicable).

2. Fail2ban Health

sudo systemctl is-active fail2ban
sudo fail2ban-client status sshd

Confirms Fail2ban is running and the SSH jail is active. The audit should flag if Fail2ban is stopped or if a jail is missing.

3. SSH Configuration

grep "PasswordAuthentication\|PermitRootLogin" /etc/ssh/sshd_config

Both should be no. If either is missing or set to yes, something changed and you need to know.

4. File Permissions

ls -la ~/.openclaw/openclaw.json

Should show -rw------- (600). If it's more permissive, another user or process could read your config — including your gateway password and API keys.

5. Open Ports

ss -tlnp

Shows what's actually listening on which ports. The audit should compare this against your expected list. Any unexpected listener is worth investigating.

6. Docker Sandbox Status

docker info 2>/dev/null && echo "Docker running" || echo "Docker not running"

If Docker is down, subagent sandboxing is disabled. That's a material security regression.

7. Process Check — Running as Non-Root

ps aux | grep openclaw

Confirms the OpenClaw process is running under the openclaw user, not root.

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A More Complete Audit Prompt

For a thorough daily OpenClaw security cron, use this extended prompt:

Set up a daily cron job at 9am that audits my security setup. Check:
1. UFW is active and deny-incoming is the default
2. Fail2ban is running with SSH jail active
3. PasswordAuthentication and PermitRootLogin are both set to no in sshd_config
4. openclaw.json permissions are 600
5. OpenClaw process is running as non-root user
6. No unexpected ports are listening (compare to my known list)
7. Docker is running (for subagent sandboxing)
8. Tailscale is connected
9. No API keys are hardcoded in any config files

Report results as: ✅ PASS or ❌ FAIL for each item. If anything fails, message me immediately and explain what changed. If everything passes, just send a brief daily summary.

This gives you structured output that's easy to scan. You're looking for a string of green checkmarks. Anything red needs your attention.

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What a Healthy Audit Report Looks Like

Good day:

🔒 Daily Security Audit — 9:00 AM
✅ UFW active, deny-incoming default
✅ Fail2ban running, SSH jail active
✅ SSH: PasswordAuthentication no, PermitRootLogin no
✅ openclaw.json permissions: 600
✅ Running as user: openclaw (not root)
✅ No unexpected open ports
✅ Docker running
✅ Tailscale connected
✅ No hardcoded API keys found

Score: 9/9 — All clear.

Flagged day:

🔒 Daily Security Audit — 9:00 AM
✅ UFW active, deny-incoming default
❌ Fail2ban: service not running — needs restart
✅ SSH: PasswordAuthentication no, PermitRootLogin no
✅ openclaw.json permissions: 600
✅ Running as user: openclaw (not root)
❌ Unexpected listener on port 3000 — process: node
✅ Docker running
✅ Tailscale connected
✅ No hardcoded API keys found

Score: 7/9 — ACTION REQUIRED: Restart Fail2ban. Investigate port 3000.

When you get a flagged report, you act. Everything else runs on autopilot.

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Combining Audit with Backup

Stack the daily audit alongside the backup cron for complete coverage. The backup runs at 4:00 AM (before anything else happens), and the audit runs at 9:00 AM (when you're awake to receive the report).

Set up a daily cron at 4am to back up all config files, soul file, memory files, and skills.
Set up a separate daily cron at 9am for the security audit.

Two cron jobs. Zero manual work. Full coverage.

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Extending the Audit With Custom Checks

Once the base audit is running, you can add domain-specific checks:

API spending alert:

Also check my Anthropic API spend this month. If it's over $50, include a warning in the daily audit report.

Config change detection:

Compare openclaw.json checksum against yesterday's. If it changed, include the diff in the report.

Version drift check:

Check if a newer version of the openclaw package is available. If there is, include it in the audit report.

Your daily security audit cron becomes the single place where you see everything important about your setup, delivered every morning without touching a thing.

[→ See also: OpenClaw Self-Audit: The Prompt That Checks Your Own Security Setup] [→ See also: OpenClaw Heartbeat Monitoring: How to Set Up 30-Minute Health Checks] [→ See also: OpenClaw Backup Strategy: Never Rebuild Your Agent From Scratch Again]

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Key Takeaways

• One-time hardening creates a secure baseline. Daily cron jobs keep it secure over time.
• OpenClaw's built-in scheduling lets you create audit jobs with a single conversational prompt — no Linux crontab knowledge required.
• The seven things to check every day: firewall, Fail2ban, SSH config, file permissions, open ports, Docker status, and running user.
• Healthy audit output is a string of green checkmarks. Red flags trigger immediate action.
• Stack the backup cron (4am) with the audit cron (9am) for full automated coverage.
• Extend the base audit with custom checks for API spending, config change detection, and version drift.