create_firewall_rule_advanced

WHAT IT DOES

What create_firewall_rule_advanced does on pfSense Enhanced MCP Server

AI agents use create_firewall_rule_advanced to create or update resources in pfSense Enhanced MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your pfSense Enhanced MCP Server environment.

WHY IT NEEDS A POLICY

Why create_firewall_rule_advanced needs a policy

Creating firewall rules is a reversible Write operation—rules can be modified or deleted. However, severity is high because misconfigured firewall rules directly impact network security posture and traffic flow; an AI agent could accidentally block legitimate traffic, expose services, or create security gaps. The absence of a description reduces confidence slightly, but the tool name and server context are clear.

From the tool's definition Tool name 'create_firewall_rule_advanced' indicates creation of firewall rules. Server description states it provides 'tools for firewall rule configuration.' The tool creates new firewall policy that persists and modifies network behavior.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_firewall_rule_advanced Rate-limited

create_firewall_rule_advanced stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_firewall_rule_advanced": {
      "limits": [
        {
          "counter": "create_firewall_rule_advanced_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about create_firewall_rule_advanced

What does the create_firewall_rule_advanced tool do? +

create_firewall_rule_advanced. It is categorised as a Write tool in the pfSense Enhanced MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_firewall_rule_advanced? +

Register the pfSense Enhanced MCP Server MCP server in PolicyLayer and add a rule for create_firewall_rule_advanced: 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 Enhanced MCP Server. Nothing to install.

What risk level is create_firewall_rule_advanced? +

create_firewall_rule_advanced is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_firewall_rule_advanced? +

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

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

create_firewall_rule_advanced is provided by the pfSense Enhanced MCP Server MCP server (mmaxwellcb/pfsesen_mcp_2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.