enum_shares

THE RISK

High Risk

Why enum_shares needs a policy

This tool executes active enumeration commands (smbclient, enum4linux, showmount) against target systems to discover shared resources. While the intent is reconnaissance/read, it runs external tools that interact with remote network services, making it Execute.

From the tool's definition SMB/NFS share enumeration using smbclient, enum4linux, showmount — active network reconnaissance tools that execute external commands against remote systems

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

POLICY

How to control enum_shares

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "enum_shares": {
      "limits": [
        {
          "counter": "enum_shares_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

enum_shares 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.

Create a free account and register Kali 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.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

High-risk tools in Kali MCP Server → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
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FAQ

Questions about enum_shares

What does the enum_shares tool do? +

SMB/NFS share enumeration (smbclient, enum4linux, showmount). It is categorised as a Execute tool in the Kali MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on enum_shares? +

Register the Kali MCP Server MCP server in PolicyLayer and add a rule for enum_shares: 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 Kali MCP Server. Nothing to install.

What risk level is enum_shares? +

enum_shares is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit enum_shares? +

Yes. Add a rate_limit block to the enum_shares 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 enum_shares completely? +

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

enum_shares is provided by the Kali MCP Server MCP server (k3nn3dy-ai/kali-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Kali MCP Server tool call.

Start from Kali 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 →