firewall_add_filter_rule · MikroTik MCP Server MCP

WHAT IT DOES

What firewall_add_filter_rule does on MikroTik MCP Server

AI agents use firewall_add_filter_rule to create or update resources in MikroTik MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your MikroTik MCP Server environment.

WHY IT NEEDS A POLICY

Why firewall_add_filter_rule needs a policy

An AI agent can call firewall_add_filter_rule faster than any human can review — one bad instruction and it creates or modifies resources in MikroTik MCP Server by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

firewall_add_filter_rule Rate-limited

firewall_add_filter_rule 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.

View as policy code

policy.json

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

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches MikroTik MCP Server, so you can run agents against it safely.

FAQ

Questions about firewall_add_filter_rule

What does the firewall_add_filter_rule tool do? +

Add a firewall filter rule. It is categorised as a Write tool in the MikroTik 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 firewall_add_filter_rule? +

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

What risk level is firewall_add_filter_rule? +

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

Can I rate-limit firewall_add_filter_rule? +

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

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

firewall_add_filter_rule is provided by the MikroTik MCP Server MCP server (stormbliss/mikrotik-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.