connect_eveng_server

THE RISK

Medium Risk

Why connect_eveng_server needs a policy

This tool establishes a connection and authenticates to the EVE-NG server, which creates a session/state on the server. It is not purely read-only (it initiates a session) but does not irreversibly destroy data or execute arbitrary commands. It is most analogous to a Write/session-creation operation. Misuse could grant unauthorized access to manage network topologies, hence medium severity.

From the tool's definition Connect to EVE-NG server and authenticate

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

POLICY

How to control connect_eveng_server

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_eveng_server:

policy.json

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

connect_eveng_server 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_eveng_server

What does the connect_eveng_server tool do? +

Connect to EVE-NG server and authenticate. 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_eveng_server? +

Register the EVE-NG MCP Server MCP server in PolicyLayer and add a rule for connect_eveng_server: 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_eveng_server? +

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

Can I rate-limit connect_eveng_server? +

Yes. Add a rate_limit block to the connect_eveng_server 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_eveng_server completely? +

Set action: deny in the PolicyLayer policy for connect_eveng_server. 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_eveng_server? +

connect_eveng_server 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 →