update_firewall_rules

Update rules for a specific firewall

SERVERLinode MCP Server SOURCEtakashito/linode-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/takashito-linode-mcp-server/update-firewall-rules.md

WHAT IT DOES

What update_firewall_rules does on Linode MCP Server

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

RISK

Why update_firewall_rules is rated Medium

This tool modifies firewall rules, which is a reversible write operation (rules can be updated again or reverted). While firewall changes have significant blast radius (could block legitimate traffic or expose infrastructure to threats), the action is not destructive (rules aren't permanently deleted) and not financial.

From the tool's definition Tool name 'update_firewall_rules' and description 'Update rules for a specific firewall' indicate modification of firewall configuration rules.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_firewall_rules safely

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

update_firewall_rules Rate-limited

update_firewall_rules 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": {
    "update_firewall_rules": {
      "limits": [
        {
          "counter": "update_firewall_rules_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about update_firewall_rules

What does the update_firewall_rules tool do? +

Update rules for a specific firewall. It is categorised as a Write tool in the Linode 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 update_firewall_rules? +

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

What risk level is update_firewall_rules? +

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

Can I rate-limit update_firewall_rules? +

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

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

update_firewall_rules is provided by the Linode MCP Server MCP server (takashito/linode-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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