Enable inter-VLAN routing on all interfaces
AI agents use interface_enable_intervlan_all 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 network configuration by enabling inter-VLAN routing across all interfaces. This is a reversible write operation (can be disabled), but has high severity due to the broad blast radius—enabling inter-VLAN routing on all interfaces can significantly alter network isolation and security posture, potentially exposing traffic between VLANs that should be segregated.
From the tool's definition Tool name 'interface_enable_intervlan_all' and description 'Enable inter-VLAN routing on all interfaces' indicate a configuration change to network routing behavior affecting all interfaces.
Risk signalsBulk/mass operation — affects multiple targets
Documented attack patterns abuse exactly the kind of access interface_enable_intervlan_all 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 interface_enable_intervlan_all:
{
"version": "1",
"default": "deny",
"tools": {
"interface_enable_intervlan_all": {
"limits": [
{
"counter": "interface_enable_intervlan_all_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}interface_enable_intervlan_all 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.
Free to start. No card required.
Enable inter-VLAN routing on all interfaces. 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 interface_enable_intervlan_all: 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.
interface_enable_intervlan_all 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 interface_enable_intervlan_all 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 interface_enable_intervlan_all. 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.
interface_enable_intervlan_all 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.