AI agents call pfsense_list_firewall_traffic_shapers to retrieve information from Pfsense without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a Read operation as it retrieves firewall configuration data. However, severity is elevated to medium rather than low because: (1) the tool operates on a critical security appliance (pfSense firewall), (2) traffic shaper configurations reveal network policies and bandwidth constraints that could inform attacks, and (3) while there are no side effects, the blast radius of information disclosure on firewall…
From the tool's definition Tool name is 'pfsense_list_firewall_traffic_shapers' — 'list' indicates a retrieval operation that queries existing firewall traffic shaper configurations without modifying them.
Attacks that exploit this kind of access
pfsense_list_firewall_traffic_shapers. It is categorised as a Read tool in the Pfsense MCP Server, which means it retrieves data without modifying state.
Register the Pfsense MCP server in PolicyLayer and add a rule for pfsense_list_firewall_traffic_shapers: 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.
pfsense_list_firewall_traffic_shapers is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the pfsense_list_firewall_traffic_shapers 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.
Set action: deny in the PolicyLayer policy for pfsense_list_firewall_traffic_shapers. 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.
pfsense_list_firewall_traffic_shapers 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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