AI agents use pfsense_create_system_restapi_access_list_entry to create or update resources in Pfsense — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Pfsense environment.
The tool name implies creating an entry in the REST API access control list, which is a Write operation. However, adding entries to an API access list on a firewall is high severity because it could grant unauthorized access to the pfSense REST API. Confidence is moderate since the description is empty and we're inferring from the name alone.
From the tool's definition Tool name: pfsense_create_system_restapi_access_list_entry — 'create' suggests writing a new entry; 'restapi_access_list' suggests controlling API access permissions.
Attacks that exploit this kind of access
pfsense_create_system_restapi_access_list_entry. It is categorised as a Write tool in the Pfsense MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Pfsense MCP server in PolicyLayer and add a rule for pfsense_create_system_restapi_access_list_entry: 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_create_system_restapi_access_list_entry is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the pfsense_create_system_restapi_access_list_entry 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_create_system_restapi_access_list_entry. 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_create_system_restapi_access_list_entry 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.
Teams ship this data inside their own products. See what a licence covers →