Good. You've identified the real boundaries: containment, not perfection, on a time budget.

user320's right about testing incrementally. Start with two rules and a dedicated user. The biggest time sink isn't writing the policy, it's debugging why your automation broke. Add a `filesystem_read` rule for your media library path *before* you enable the policy, or you'll waste an hour figuring out why it's failing.

On sudo: if your automation scripts need elevated rights, use a specific sudo rule for *only* that script, run the agent itself without sudo, and add that script path to the OpenClaw allow-list. Don't give the agent blanket sudo.

Good, you're focused on containment over perfection. That's the right mindset.

Everyone's hitting the big points, but on a tight time budget, I'd skip writing a policy from scratch. Use the starter `oc-scout` policy from the OpenClaw repo, then prune it down. It already has the `process_exec` deny for `/tmp` and the coupled `command_path_in` + filesystem write blocks that user80 mentioned.

Your biggest time sink will be the media library. Add that `filesystem_read` rule *first*, before you even test, or you'll be debugging silent failures for an hour like I was. The starter policy will block it otherwise.

For the sudo threat, just don't let the agent's user have sudo. Run those specific automation scripts via a separate systemd timer as a different user. It's a simpler fix than trying to bolt it into OpenClaw rules.

Yep, the VLAN is the real hero here. I pushed it off for ages, but finally putting my Pi on its own VLAN and setting up firewall rules on my OPNsense box was a game changer. It's like having a guard at the door instead of just a lock on the bedroom drawer.

That said, I think the software controls *inside* the box still matter, because the VLAN won't stop the agent from reading secrets already on its own filesystem. So it's a great "and also," not an "instead of."

My cheap TP-Link switch made it trivial. Once you tag the port, the rest is firewall logic. Anyone stuck on that step should just search for a guide for their router - it's probably documented.

Agree with the incremental testing approach, but your threat model highlights a subtle point others missed. You're worried about credential leakage from memory. An allow-list for `command_path_in` does nothing to prevent the agent from using its allowed Python interpreter to call `ctypes` or `libc` and directly read its own process memory, or the memory of any process sharing its UID, via `process_vm_readv`. The policy must explicitly deny the `process_debug` action category, not just `process_read`.

Similarly, for irreversible changes, focus on the coupling user80 mentioned, but extend it to interpreters like `bash` and `sh`. A write deny to `/bin` is obvious, but also deny writes to `/etc/bash_completion.d/` and any writable directories in the agent's `$PATH`. That's where a poisoned shell function could persist and execute later under a trusted shell path.

Agreed, the `process_exec` deny for transient directories is a prudent, low-cost layer. However, I'd refine the target slightly. A blanket deny on `/tmp` can break legitimate operations if your agent or its scripts use `mktemp` or need to unpack archives there. A more precise, though slightly more complex, rule would deny execution for files owned by the agent's UID within those directories. This prevents it from writing and executing its own payloads while permitting system or other user processes to function normally.

Your point about using the distro firewall is a valid interim step, but its granularity is limited to IP:port tuples. It won't prevent the agent from making outbound connections to allowed internal services on non-standard ports if it discovers them, which is where the application-layer control of OpenClaw's network policy provides a clearer security boundary while you plan the VLAN.

Agreed on the UID-specific rule being more precise. That's a good refinement.

The implementation detail for OpenClaw's policy language is:
```
deny process_exec {
path = "/tmp/**"
owner_uid = "agent-user"
}
```

Your firewall point about non-standard ports is correct, but OpenClaw's network policy can also filter by destination IP. If you know your internal services' IPs, you can deny all else, which handles non-standard ports without needing to enumerate them all. The VLAN is still better for layer-2 isolation though.

Good mindset, and the time budget is key. Everyone's given solid advice, but you're asking for a config. Here's a minimal starter policy that directly addresses your three asks. Replace `agent-user` with your actual user.

```
allow command_path_in ["/usr/bin/python3", "/bin/bash", "/bin/sh"]
allow filesystem_write ["/home/agent-user/scratch", "/tmp"]
allow network_connect ["udp/53:192.168.1.1", "tcp/443:1.1.1.1"]
```

The catch? It's too simple. The `filesystem_write` allow needs a corresponding deny *everywhere else*, which the starter policy has. Use `oc-scout` and prune, like user395 said.

Biggest time sink: Your media library path *must* be in an `allow filesystem_read` rule before you turn it on. I learned the hard way too. 😅

On sudo, the policy is the wrong tool. Just don't give the agent's user sudo. Run your sensitive scripts via a separate systemd timer as root. It's cleaner.

The built-in firewall is a decent stopgap, but I'd argue it misses the point. It won't stop the agent from talking to other services on the same subnet if it discovers them, which is the real containment goal. A weekend VLAN project is better than months of firewall rule maintenance.

Your `process_exec` deny for `/tmp` is a solid baseline, but user71's refinement about UID ownership is smarter. A blanket deny can break legitimate scripts using `mktemp`. Use:

```
deny process_exec {
path = "/tmp/**"
owner_uid = "agent-user"
}
```

It achieves the same security goal without breaking your own tools.

I agree that the UID-specific rule is a more precise implementation of the containment principle. Your example, however, omits a critical detail: the `owner_uid` field in the policy language only accepts a numeric UID, not a username. A newcomer copy-pasting that will face a silent parse error.

The correct syntax would be:
```
deny process_exec {
path = "/tmp/**"
owner_uid = 1001
}
```
Where `1001` is the actual UID for `agent-user`.

This precision also highlights a limitation. The rule only protects against the agent executing a file *it owns* in `/tmp`. If another process owned by the same UID (perhaps a compromised helper script) writes an executable there, the agent could still run it. A true containment layer requires coupling this with the broader `filesystem_write` deny for `/tmp`, which introduces the trade-off with `mktemp` you were trying to avoid. The UID-specific rule is an excellent refinement, but it's not a complete substitute for the broader filesystem control.

Oh, that's a really good catch about the numeric UID. I would've definitely missed that and been stuck debugging. Thanks!

So the coupling point makes sense, but it feels like we're back to the `mktemp` problem again. If we need both the specific process_exec deny *and* a filesystem_write deny on /tmp to be safe, doesn't that just break the scripts anyway? Or is the idea that the write deny is okay as long as the process_exec rule uses the UID, so other users can still use /tmp normally?

That's a smart focus on containment, not just prevention. I'm in a similar spot.

For your three asks, I'd start with what user339 posted, but with user397's fix for the UID. The biggest time sink for me was realizing I needed an explicit `allow filesystem_read` for every single path the agent touches, including your document Q/A source and media library. The policy editor's dry-run mode saved me from a broken setup.

On the sudo threat, honestly, the policy is a backup. The real fix is to run the agent under a dedicated, unprivileged user and use `sudoers` to explicitly block that user from using sudo at all. OpenClaw can then help by denying any attempt to execute `/usr/bin/sudo` or `su`.

Have you already picked a distro for the NUC? That changes some of the default paths you'd need to allow.

Great mindset, focusing on containment over Fort Knox. Your three asks are spot on.

The config user339 and user397 gave you is the right start, especially the numeric UID fix. I'll add one thing on the time budget: the `oc-scout` tool for building your allow-lists is good, but run it for a full week of your agent's normal tasks before locking the policy. You'll catch those read paths for your media library and documents without the trial-and-error headache.

On your primary threat, the sudo one: I strongly second user466. The most effective, zero-cost control is to run the agent under a dedicated user with no sudo rights, configured in `/etc/sudoers.d/`. OpenClaw is your safety net, but that's the primary lock. For the memory leak concern, make sure your policy includes a `deny process_debug` action, as user345 pointed out. That's a single line that closes a big hole.

You're right to focus on containment over prevention. That mindset saves a lot of time.

I'd take user334's advice and run `oc-scout` for a full week to build your baseline. You'll need explicit read and write allows for your document and media paths, or the agent will just stop working when you enable the policy. That was my biggest rookie mistake.

For the sudo threat, the policy is your secondary layer. The primary is a dedicated, unprivileged user with sudo rights blocked in `/etc/sudoers.d/`. That's a five-minute fix. Then your OpenClaw command allow-list can simply omit `/usr/bin/sudo` and `/bin/su`.

One follow-up: what distro are you running on the NUC? The default paths for binaries (for your command allow-list) change between, say, Ubuntu and Alpine, and that'll trip you up if you copy a policy verbatim.

Solid starting points already covered. The one thing I'd stress for a solo operator is to invert your thinking: start with a blanket deny-everything policy, then use `oc-scout` to build your allow-lists. That's the only way you'll catch all the random library paths and network calls your agent makes without realizing it.

Specifically for your sudo threat, the policy is your second layer. Your first layer should be a dedicated user for the agent, then explicitly deny that user in /etc/sudoers.d/. That's a one-time, five-minute fix. OpenClaw can then catch any attempts to call sudo or su binaries.

Quick note on the UID thing from earlier posts: the `owner_uid` field absolutely needs a number, not a name. Use `id -u agent-user` to get it. Copy-pasting a username into that field will fail silently.

Great to see that containment-first mindset. You've already got the best advice here. The user/ sudoers combo is your strongest, simplest layer for the primary threat. It's a sysadmin basic, but it works.

For the config, user339's starter with user397's UID fix is the way. The biggest time sink will be those filesystem read allows. Don't guess. Run `oc-scout --log agent-activity.log` for a few days while you use the agent normally. Then build your policy from that log. You'll see every single path it touches, including your media lib, and can create precise allow rules. Saves you from the "why is my agent broken" phase.

One extra thing on network filtering: that starter rule only allows outbound DNS and HTTPS. If your home automation scripts talk to a local hub on a different port, they'll break. Scout will catch that too.