create_container_firewall_rule

A write tool on the Proxmox MCP server.

SERVERProxmox MCP Server SOURCEgethosthewalrus/proxmox-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/gethosthewalrus-proxmox-mcp/create-container-firewall-rule.md

WHAT IT DOES

What create_container_firewall_rule does on Proxmox MCP Server

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

RISK

Why create_container_firewall_rule is rated Medium

Creating a firewall rule modifies container network security configuration reversibly—it can be deleted or updated later. This is a Write operation with high severity because misconfigured firewall rules can expose containers to unauthorized network access or block legitimate traffic, affecting multiple systems.

From the tool's definition Tool name 'create_container_firewall_rule' indicates creation of a firewall rule. Description is empty, but the name and the context of sibling tools (add_firewall_ipset_entry, apply_sdn_changes, bulk_migrate_guests) establish this as an infrastructure…

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs create_container_firewall_rule safely

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

create_container_firewall_rule Rate-limited

create_container_firewall_rule 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_container_firewall_rule": {
      "limits": [
        {
          "counter": "create_container_firewall_rule_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 Proxmox MCP Server, apply this rule, and every create_container_firewall_rule call is checked against it from then on.

FAQ

Questions about create_container_firewall_rule

What does the create_container_firewall_rule tool do? +

create_container_firewall_rule is a write tool on the Proxmox MCP Server MCP server. It is categorised as a Write tool in the Proxmox 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_container_firewall_rule? +

Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for create_container_firewall_rule: 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 Proxmox MCP Server. Nothing to install.

What risk level is create_container_firewall_rule? +

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

Can I rate-limit create_container_firewall_rule? +

Yes. Add a rate_limit block to the create_container_firewall_rule 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_container_firewall_rule completely? +

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

create_container_firewall_rule is provided by the Proxmox MCP Server MCP server (gethosthewalrus/proxmox-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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