AI agents invoke ids_restart to trigger actions in OPNSense MCP Server. 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.
Restarting the IDS/IPS service is an Execute action—it runs an operation external to the tool itself with real-world consequences (service downtime, temporary loss of intrusion detection coverage). While not destructive (data is not deleted), and not directly harmful if executed in isolation, a malicious agent could exploit this to temporarily disable threat detection during an attack window.
From the tool's definition Tool name 'ids_restart' and description 'Restart IDS/IPS service' indicate triggering an external operation (service restart) whose effects depend on system state and timing.
Documented attack patterns abuse exactly the kind of access ids_restart gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OPNSense MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for ids_restart:
{
"version": "1",
"default": "deny",
"tools": {
"ids_restart": {
"limits": [
{
"counter": "ids_restart_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}ids_restart 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.
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Restart IDS/IPS service. It is categorised as a Execute tool in the OPNSense MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the OPNSense MCP Server MCP server in PolicyLayer and add a rule for ids_restart: 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 OPNSense MCP Server. Nothing to install.
ids_restart 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 ids_restart 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 ids_restart. 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.
ids_restart is provided by the OPNSense MCP Server MCP server (vespo92/opnsensemcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 196 OPNSense MCP Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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196 OPNSense MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.