omniwire_dns

THE RISK

High Risk

Why omniwire_dns needs a policy

While DNS resolution (lookup) is a Read operation, this tool also performs Write and Execute-level operations: switching DNS servers changes system network configuration, flushing caches triggers system commands, and managing /etc/hosts modifies a critical system file.

From the tool's definition Switch DNS servers, flush caches, manage /etc/hosts entries — these are system-level operations that modify network resolution behavior on mesh nodes

Documented attack patterns abuse exactly the kind of access omniwire_dns gives an agent:

POLICY

How to control omniwire_dns

PolicyLayer is an MCP gateway — it sits between your AI agents and OmniWire, and nothing reaches the server without passing your rules. This is the rule we recommend for omniwire_dns:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "omniwire_dns": {
      "limits": [
        {
          "counter": "omniwire_dns_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

omniwire_dns stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register OmniWire — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More OmniWire tools

Destructive cybersync_force_push Force push a specific file to all online nodes, overwriting remote copies. Destructive omniwire_2fa TOTP 2FA manager — add/generate/list/delete/verify/export 2FA secrets. Stores encrypted in Destructive omniwire_user User and SSH key management on mesh nodes. Actions: list, add, remove, add-key, remove-key Destructive omniwire_backup Snapshot and restore paths on mesh nodes. Creates timestamped tarballs in /var/backups/omn Execute omniwire_cdp Chrome DevTools Protocol — persistent headless browser via Docker container. Navigate, scr Execute omniwire_cron Manage cron jobs on a node. List, add, or remove scheduled tasks. Execute omniwire_omnimesh OmniMesh — built-in WireGuard mesh network manager. Create, manage, and monitor a full-mes Execute cybersync_sync_now Trigger immediate full reconciliation of all tool configs.

All 88 OmniWire tools →

Execute tools on other servers

Android Forensics ADB MCP Server adb_shell_command EMBA-MCP run_emba_scan Frida Game Hacking MCP remove_breakpoint Procmon request_elevation

Go deeper

High-risk tools in OmniWire → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about omniwire_dns

What does the omniwire_dns tool do? +

DNS management on mesh nodes. Resolve hostnames, switch DNS servers, flush caches, manage /etc/hosts entries. It is categorised as a Execute tool in the OmniWire MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on omniwire_dns? +

Register the OmniWire MCP server in PolicyLayer and add a rule for omniwire_dns: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches OmniWire. Nothing to install.

What risk level is omniwire_dns? +

omniwire_dns is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit omniwire_dns? +

Yes. Add a rate_limit block to the omniwire_dns rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block omniwire_dns completely? +

Set action: deny in the PolicyLayer policy for omniwire_dns. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides omniwire_dns? +

omniwire_dns is provided by the OmniWire MCP server (voidchecksum/omniwire). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every OmniWire tool call.

Start from OmniWire, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →