This record as markdown: /tools/hostinger-mcp/vps-firewall-activate.md
What vps_firewall_activate does on Hostinger
AI agents invoke vps_firewall_activate to trigger actions in Hostinger. 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.
Why vps_firewall_activate is rated High
Activating a firewall triggers an external network-level operation on a VPS that changes its traffic filtering behavior. This is not a simple data write — it executes a system-level change that affects network access and connectivity. Misuse could block legitimate traffic or lock out access to the server, making severity high.
From the tool's definition Activate a firewall on a VPS
Attacks that exploit this kind of access
The rule that runs vps_firewall_activate safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hostinger, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For vps_firewall_activate, this is the rule to start with:
vps_firewall_activate 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.
The button opens the PolicyLayer dashboard: create your workspace, connect Hostinger, apply this rule, and every vps_firewall_activate call is checked against it from then on.
Questions about vps_firewall_activate
Activate a firewall on a VPS. It is categorised as a Execute tool in the Hostinger MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Hostinger MCP server in PolicyLayer and add a rule for vps_firewall_activate: 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 Hostinger. Nothing to install.
vps_firewall_activate is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the vps_firewall_activate 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.
Set action: deny in the PolicyLayer policy for vps_firewall_activate. 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.
vps_firewall_activate is provided by the Hostinger MCP server (idugeni/hostinger-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Hostinger, and thousands of servers like it.
Across the catalogue