list_interfaces

THE RISK

Low Risk

Why list_interfaces needs a policy

This tool retrieves or enumerates existing network interface metadata. It performs a read-only query of system network configuration state. There is no code execution, data modification, deletion, or financial impact. While the information could theoretically inform malicious network capture decisions, the tool itself is purely informational retrieval with minimal blast radius if misused in isolation.

From the tool's definition Tool name 'list_interfaces' and description 'List all network interfaces available for packet capture' indicates a query operation that retrieves information about available network interfaces without modifying, executing code, or causing side effects.

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

POLICY

How to control list_interfaces

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

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_interfaces": {}
  }
}

list_interfaces is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

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

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mcp Wireshark tools

Execute protocol_stats Run a tshark Execute live_capture Capture live network traffic from an interface. Writes to a Write export_json Export packets from a pcap file to a JSON file at output_path. Read check_installation Check if Wireshark/tshark is installed and return version info. Read decode_protocol Extract protocol-specific fields from a pcap file using tshark Read display_filter Apply a Wireshark display filter to a pcap file and return a Read expert_info Run tshark expert analysis on a pcap file. Returns warnings, errors, Read follow_tcp Follow a TCP stream by index and return its ASCII payload.

All 13 Mcp Wireshark tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_interfaces

What does the list_interfaces tool do? +

List all network interfaces available for packet capture. It is categorised as a Read tool in the Mcp Wireshark MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_interfaces? +

Register the Mcp Wireshark MCP server in PolicyLayer and add a rule for list_interfaces: 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 Mcp Wireshark. Nothing to install.

What risk level is list_interfaces? +

list_interfaces is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_interfaces? +

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

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

list_interfaces is provided by the Mcp Wireshark MCP server (khuynh22/mcp-wireshark). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Wireshark tool call.

Start from Mcp Wireshark, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →