firewall_add_port

Open a port in the firewall.

SERVERAapanel SOURCEnipunanirmal/aapanel-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aapanel-mcp/firewall-add-port.md

WHAT IT DOES

What firewall_add_port does on Aapanel

AI agents use firewall_add_port to create or update resources in Aapanel, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Aapanel environment.

RISK

Why firewall_add_port is rated Medium

This tool modifies firewall configuration by opening/adding a port, making it a Write operation (reversible state change). Severity is high because unauthorized firewall modifications can significantly impact system security and network access controls, creating potential exposure for lateral movement or unauthorized service access. Confidence is high due to explicit description of the action.

From the tool's definition Tool name 'firewall_add_port' with description 'Open a port in the firewall' indicates modification of firewall rules, which is a reversible configuration change.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs firewall_add_port safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Aapanel, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For firewall_add_port, this is the rule to start with:

firewall_add_port Rate-limited

firewall_add_port 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": {
    "firewall_add_port": {
      "limits": [
        {
          "counter": "firewall_add_port_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Aapanel, apply this rule, and every firewall_add_port call is checked against it from then on.

FAQ

Questions about firewall_add_port

What does the firewall_add_port tool do? +

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

How do I enforce a policy on firewall_add_port? +

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

What risk level is firewall_add_port? +

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

Can I rate-limit firewall_add_port? +

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

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

firewall_add_port is provided by the Aapanel MCP server (nipunanirmal/aapanel-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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