list_firewall_groups

List firewall security groups (reusable sets of rules).

SERVERProxmox MCP Server SOURCEgethosthewalrus/proxmox-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/gethosthewalrus-proxmox-mcp/list-firewall-groups.md

WHAT IT DOES

What list_firewall_groups does on Proxmox MCP Server

AI agents call list_firewall_groups to retrieve information from Proxmox MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_firewall_groups is rated Low

This tool only queries and displays existing firewall security groups. It performs no data modifications, deletions, or external operations. The 'list' action is inherently a read-only operation that retrieves configuration data for informational purposes.

From the tool's definition Tool name contains 'list' and description states 'List firewall security groups' - a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_firewall_groups 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 list_firewall_groups, this is the rule to start with:

list_firewall_groups Allowed

list_firewall_groups is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY 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 list_firewall_groups call is checked against it from then on.

FAQ

Questions about list_firewall_groups

What does the list_firewall_groups tool do? +

List firewall security groups (reusable sets of rules). It is categorised as a Read tool in the Proxmox MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_firewall_groups? +

Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for list_firewall_groups: 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 list_firewall_groups? +

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

Can I rate-limit list_firewall_groups? +

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

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

list_firewall_groups 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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