Ports accidentally being opened to the Internet is an age-old problem. This results in regular firewall reviews or, worse, having the port identified with a discovered vulnerability, raising the risk to the organization. Increasing complexity, continuous deployments, and chances of misconfigurations have increased the need for third-party validation.

I built Lunker Zero for ChatOps to perform regular checks with Censys Search to determine when ports are open/closed based on the Autonomous System (AS) number query results.