DELETE /api/v2/services/haproxy/settings/dns_resolver
AI agents call pfsense_delete_services_haproxy_settings_dns_resolver to permanently remove resources in Pfsense — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool uses DELETE operation to remove HAProxy DNS resolver settings from pfSense firewall configuration. This is irreversible data deletion that cannot be undone without manual restoration. While not as critical as deleting firewall rules that could expose the network, removing DNS resolver settings could disrupt HAProxy functionality and DNS resolution for services dependent on it.
From the tool's definition Tool name contains 'delete' and description shows DELETE HTTP method on API endpoint for HAProxy DNS resolver settings. This permanently removes configuration.
Attacks that exploit this kind of access
DELETE /api/v2/services/haproxy/settings/dns_resolver. It is categorised as a Destructive tool in the Pfsense MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Pfsense MCP server in PolicyLayer and add a rule for pfsense_delete_services_haproxy_settings_dns_resolver: 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_delete_services_haproxy_settings_dns_resolver is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the pfsense_delete_services_haproxy_settings_dns_resolver 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_delete_services_haproxy_settings_dns_resolver. 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_delete_services_haproxy_settings_dns_resolver 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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