pfsense_vpn_wireguard_apply · Pfsense MCP: Risk & Policy

WHAT IT DOES

What pfsense_vpn_wireguard_apply does on Pfsense

AI agents invoke pfsense_vpn_wireguard_apply to trigger actions in Pfsense. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why pfsense_vpn_wireguard_apply needs a policy

Applying WireGuard configuration pushes pending changes into effect on the pfSense firewall, restarting or reconfiguring the VPN service. This is an Execute-class action as it triggers an external operational change (service reconfiguration/restart) rather than simply writing data. Misuse could disrupt VPN connectivity for all connected clients, making severity high.

From the tool's definition POST /api/v2/vpn/wireguard/apply — 'apply' triggers external operation that activates pending WireGuard VPN configuration changes on the firewall

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pfsense_vpn_wireguard_apply Rate-limited

pfsense_vpn_wireguard_apply 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.

View as policy code

policy.json

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

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Pfsense, so you can run agents against it safely.

FAQ

Questions about pfsense_vpn_wireguard_apply

What does the pfsense_vpn_wireguard_apply tool do? +

POST /api/v2/vpn/wireguard/apply. It is categorised as a Execute tool in the Pfsense MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on pfsense_vpn_wireguard_apply? +

Register the Pfsense MCP server in PolicyLayer and add a rule for pfsense_vpn_wireguard_apply: 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 Pfsense. Nothing to install.

What risk level is pfsense_vpn_wireguard_apply? +

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

Can I rate-limit pfsense_vpn_wireguard_apply? +

Yes. Add a rate_limit block to the pfsense_vpn_wireguard_apply 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 pfsense_vpn_wireguard_apply completely? +

Set action: deny in the PolicyLayer policy for pfsense_vpn_wireguard_apply. 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 pfsense_vpn_wireguard_apply? +

pfsense_vpn_wireguard_apply is provided by the Pfsense MCP server (abl030/pfsense-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.