pfsense_list_user_groups

A read tool on the Pfsense MCP server.

SERVERPfsense SOURCEabl030/pfsense-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/abl030-pfsense-mcp/pfsense-list-user-groups.md

WHAT IT DOES

What pfsense_list_user_groups does on Pfsense

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

RISK

Why pfsense_list_user_groups is rated Low

The 'list' operation retrieves user group data from the pfSense firewall without modifying anything. This is a Read category action. Severity is medium rather than low because user group information could be sensitive for network access control configuration, though exposure is non-destructive and the blast radius of misuse is limited to information disclosure.

From the tool's definition Tool name 'pfsense_list_user_groups' indicates a list/retrieval operation with no side effects. Description is empty, limiting confidence slightly.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs pfsense_list_user_groups safely

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

pfsense_list_user_groups Allowed

pfsense_list_user_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": {
    "pfsense_list_user_groups": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about pfsense_list_user_groups

What does the pfsense_list_user_groups tool do? +

pfsense_list_user_groups is a read tool on the Pfsense MCP server. It is categorised as a Read tool in the Pfsense MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on pfsense_list_user_groups? +

Register the Pfsense MCP server in PolicyLayer and add a rule for pfsense_list_user_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 Pfsense. Nothing to install.

What risk level is pfsense_list_user_groups? +

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

Can I rate-limit pfsense_list_user_groups? +

Yes. Add a rate_limit block to the pfsense_list_user_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 pfsense_list_user_groups completely? +

Set action: deny in the PolicyLayer policy for pfsense_list_user_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 pfsense_list_user_groups? +

pfsense_list_user_groups is provided by the Pfsense MCP server (abl030/pfsense-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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