stop_netcat_listener

Terminates a background Netcat listener process using its PID.

SERVERPentester-MCP SOURCEhalilkirazkaya/pentester-mcp

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/halilkirazkaya-pentester-mcp/stop-netcat-listener.md

WHAT IT DOES

What stop_netcat_listener does on Pentester-MCP

AI agents invoke stop_netcat_listener to trigger actions in Pentester-MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

RISK

Why stop_netcat_listener is rated High

This tool executes a process termination command (kill) on a running system resource (Netcat listener). While the action itself is reversible (a listener can be restarted), it triggers external system operations whose effects depend on runtime state.

From the tool's definition Terminates a background Netcat listener process using its PID. Netcat is a penetration testing tool capable of opening network ports, establishing reverse shells, and creating persistent network access vectors.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs stop_netcat_listener safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Pentester-MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For stop_netcat_listener, this is the rule to start with:

stop_netcat_listener Rate-limited

stop_netcat_listener 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.

View as policy code

policy.json

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

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Pentester-MCP, apply this rule, and every stop_netcat_listener call is checked against it from then on.

FAQ

Questions about stop_netcat_listener

What does the stop_netcat_listener tool do? +

Terminates a background Netcat listener process using its PID. It is categorised as a Execute tool in the Pentester-MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on stop_netcat_listener? +

Register the Pentester MCP server in PolicyLayer and add a rule for stop_netcat_listener: 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 Pentester-MCP. Nothing to install.

What risk level is stop_netcat_listener? +

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

Can I rate-limit stop_netcat_listener? +

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

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

stop_netcat_listener is provided by the Pentester MCP server (halilkirazkaya/pentester-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Pentester, and thousands of servers like it.

This server

All 337 Pentester tools → High-risk tools on this server →

Across the catalogue

stop_emba_scan on EMBA-MCP → All high-risk MCP tools → The MCP Attack Database →

Guides

Govern code and CI agents →Agent sandbox →Least privilege for MCP →