What about a firewall?

You can install your own software firewall or simply purchase a firewall for your server (for charges, see the Pricing page).

Having purchased a firewall from us its simple to add it to your server. From the control panel, first shut down the server, then click Edit. On the Edit page, click “Enabled” next to Firewall: don’t forget to hover your mouse over the green tooltip for more information on the options available to you.