This record as markdown: /tools/abl030-pfsense-mcp/pfsense-vpn-ipsec-apply.md
What pfsense_vpn_ipsec_apply does on Pfsense
AI agents invoke pfsense_vpn_ipsec_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_vpn_ipsec_apply is rated High
This tool applies pending IPsec VPN configuration changes to the live pfSense firewall. It triggers an external operation that activates network-level changes (VPN tunnels, routing, security policies). While not purely destructive, misuse could disrupt VPN connectivity, expose or close network tunnels, and affect network security posture.
From the tool's definition POST /api/v2/vpn/ipsec/apply — 'apply' triggers the application/activation of IPsec VPN configuration changes on the firewall
Attacks that exploit this kind of access
The rule that runs pfsense_vpn_ipsec_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_vpn_ipsec_apply, this is the rule to start with:
pfsense_vpn_ipsec_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_vpn_ipsec_apply call is checked against it from then on.
Questions about pfsense_vpn_ipsec_apply
POST /api/v2/vpn/ipsec/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_vpn_ipsec_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_vpn_ipsec_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_vpn_ipsec_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_vpn_ipsec_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_vpn_ipsec_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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