pfsense_services_dhcp_server_apply
POST /api/v2/services/dhcp_server/apply
This record as markdown: /tools/abl030-pfsense-mcp/pfsense-services-dhcp-server-apply.md
What pfsense_services_dhcp_server_apply does on Pfsense
AI agents invoke pfsense_services_dhcp_server_apply to trigger actions in Pfsense. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why pfsense_services_dhcp_server_apply is rated High
Applying DHCP server configuration pushes pending changes into effect on a live firewall service. This is an Execute-category action because it triggers an external operation (service reload/restart) whose effects depend on previously staged configuration. Misuse could disrupt network address assignment for all clients on the network, giving it high severity.
From the tool's definition POST /api/v2/services/dhcp_server/apply — 'apply' triggers an external operation that activates/reloads the DHCP server configuration on the pfSense firewall
Attacks that exploit this kind of access
The rule that runs pfsense_services_dhcp_server_apply 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_services_dhcp_server_apply, this is the rule to start with:
pfsense_services_dhcp_server_apply stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Pfsense, apply this rule, and every pfsense_services_dhcp_server_apply call is checked against it from then on.
Questions about pfsense_services_dhcp_server_apply
POST /api/v2/services/dhcp_server/apply. It is categorised as a Execute tool in the Pfsense MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Pfsense MCP server in PolicyLayer and add a rule for pfsense_services_dhcp_server_apply: 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_services_dhcp_server_apply is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the pfsense_services_dhcp_server_apply 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_services_dhcp_server_apply. 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_services_dhcp_server_apply 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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