Enable inter-VLAN routing at the system level
AI agents use system_enable_intervlan_routing to create or update resources in OPNSense MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your OPNSense MCP Server environment.
This tool modifies firewall system configuration by enabling inter-VLAN routing, which is a reversible network configuration change (can be disabled). It does not delete data, execute arbitrary commands, or move money, so it is Write rather than Execute or Destructive.
From the tool's definition Tool name 'system_enable_intervlan_routing' and description 'Enable inter-VLAN routing at the system level' indicate a configuration change that modifies network routing behavior.
Risk signalsAdmin/system-level operation
Documented attack patterns abuse exactly the kind of access system_enable_intervlan_routing 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 system_enable_intervlan_routing:
{
"version": "1",
"default": "deny",
"tools": {
"system_enable_intervlan_routing": {
"limits": [
{
"counter": "system_enable_intervlan_routing_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}system_enable_intervlan_routing stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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Enable inter-VLAN routing at the system level. It is categorised as a Write tool in the OPNSense MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the OPNSense MCP Server MCP server in PolicyLayer and add a rule for system_enable_intervlan_routing: 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.
system_enable_intervlan_routing 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 system_enable_intervlan_routing 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 system_enable_intervlan_routing. 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.
system_enable_intervlan_routing 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.
Free to start. No card required.
196 OPNSense MCP Server tools catalogued and risk-classified — across an index of 42,500+ MCP servers.