HeatShield is the simplest and safest way to manage a powerful firewall on your Linode servers. As one of the oldest cloud server providers, Linode has made it easy to deploy and run a cloud server.
However, as Linode's servers are unmanaged, they have no firewall by default, leaving the firewall management up to you. If you're a developer or sysadmin needing to configure a secure and stable firewall on your Linode servers, then HeatShield is for you.
Connecting Linode servers takes less than a minute. Our instructions on installing HeatShield will show you the steps.
Once you have installed HeatShield, your server will have a fully configured network firewall blocking unwanted traffic. For servers on HeatShield's free plan, your firewall will be configured to block all traffic other than SSH, HTTP, and HTTPS. For servers with more advanced needs, such as restricting SSH access or only allowing HTTP/HTTPS for Cloudflare, you can switch your server to HeatShield's paid plan.