convert_cidr_to_ip_range

THE RISK

Low Risk

Why convert_cidr_to_ip_range needs a policy

This tool performs a pure mathematical/informational conversion from CIDR notation to an IP address range. It reads/computes data with no side effects, no external system interaction, and no data modification.

From the tool's definition Convert CIDR notation to IP address range

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

POLICY

How to control convert_cidr_to_ip_range

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

policy.json

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

convert_cidr_to_ip_range 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 IT Tools 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.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

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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 →
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FAQ

Questions about convert_cidr_to_ip_range

What does the convert_cidr_to_ip_range tool do? +

Convert CIDR notation to IP address range. It is categorised as a Read tool in the IT Tools MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on convert_cidr_to_ip_range? +

Register the IT Tools MCP Server MCP server in PolicyLayer and add a rule for convert_cidr_to_ip_range: 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 IT Tools MCP Server. Nothing to install.

What risk level is convert_cidr_to_ip_range? +

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

Can I rate-limit convert_cidr_to_ip_range? +

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

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

convert_cidr_to_ip_range is provided by the IT Tools MCP Server MCP server (wrenchpilot/it-tools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every IT Tools MCP Server tool call.

Start from IT Tools 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 →