vpn_certificate_ca_list

THE RISK

Low Risk

Why vpn_certificate_ca_list needs a policy

This tool retrieves and enumerates VPN Certificate Authority certificates from the FortiOS system. It performs no creation, modification, deletion, or code execution. The operation is purely informational and has no side effects. Even if an attacker obtained a list of CA certificates, the blast radius is minimal as this is metadata about certificate authorities already present in the system.

From the tool's definition Tool name contains 'list' and description states 'List all VPN CA certificates' — a read-only query operation with no modification of data.

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

POLICY

How to control vpn_certificate_ca_list

PolicyLayer is an MCP gateway — it sits between your AI agents and FortiOS 7 6 X MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for vpn_certificate_ca_list:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "vpn_certificate_ca_list": {}
  }
}

vpn_certificate_ca_list is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register FortiOS 7 6 X MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about vpn_certificate_ca_list

What does the vpn_certificate_ca_list tool do? +

List all VPN CA certificates. It is categorised as a Read tool in the FortiOS 7 6 X MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on vpn_certificate_ca_list? +

Register the FortiOS 7 6 X MCP Server MCP server in PolicyLayer and add a rule for vpn_certificate_ca_list: 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 FortiOS 7 6 X MCP Server. Nothing to install.

What risk level is vpn_certificate_ca_list? +

vpn_certificate_ca_list is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit vpn_certificate_ca_list? +

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

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

vpn_certificate_ca_list is provided by the FortiOS 7 6 X MCP Server MCP server (paoloamato2/fortinet-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every FortiOS 7 6 X MCP Server tool call.

Start from FortiOS 7 6 X MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →