connect_node_to_node

THE RISK

Medium Risk

Why connect_node_to_node needs a policy

This tool modifies network topology by establishing a connection between two nodes in the EVE-NG emulation environment. While it changes the state of the lab configuration, it is reversible—connections can be removed or reconfigured. It does not execute arbitrary commands, delete data permanently, or move financial assets.

From the tool's definition Tool name 'connect_node_to_node' and description 'Connect two nodes together directly' indicate a network topology modification that creates a link between nodes.

Documented attack patterns abuse exactly the kind of access connect_node_to_node gives an agent:

POLICY

How to control connect_node_to_node

PolicyLayer is an MCP gateway — it sits between your AI agents and EVE-NG MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for connect_node_to_node:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "connect_node_to_node": {
      "limits": [
        {
          "counter": "connect_node_to_node_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

connect_node_to_node 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.

Create a free account and register EVE-NG MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More EVE-NG MCP Server tools

Destructive delete_lab Delete a lab from EVE-NG. Destructive delete_lab_network Delete a network from a lab. Destructive delete_node Delete a node from a lab. Destructive wipe_all_nodes Wipe all nodes in a lab (reset to factory state). Destructive wipe_node Wipe a specific node (reset to factory state). Execute start_all_nodes Start all nodes in a lab. Execute start_node Start a specific node. Execute stop_all_nodes Stop all nodes in a lab.

All 26 EVE-NG MCP Server tools →

Write tools on other servers

M-Team MCP Server download_torrent YouTube MCP Server generate_video_title Android Forensics ADB MCP Server combine_reports 0xarchive web3_signup

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Argument validation → Checking tool call arguments against schema and policy before they run.
Scoped token → Per-person credentials that grant a defined subset of servers and tools.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about connect_node_to_node

What does the connect_node_to_node tool do? +

Connect two nodes together directly. It is categorised as a Write tool in the EVE-NG MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on connect_node_to_node? +

Register the EVE-NG MCP Server MCP server in PolicyLayer and add a rule for connect_node_to_node: 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 EVE-NG MCP Server. Nothing to install.

What risk level is connect_node_to_node? +

connect_node_to_node is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit connect_node_to_node? +

Yes. Add a rate_limit block to the connect_node_to_node 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.

How do I block connect_node_to_node completely? +

Set action: deny in the PolicyLayer policy for connect_node_to_node. 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.

What MCP server provides connect_node_to_node? +

connect_node_to_node is provided by the EVE-NG MCP Server MCP server (moimran/eveng-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every EVE-NG MCP Server tool call.

Start from EVE-NG MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →