I want to understand how an online port scanner works. How can it detect whether specific ports on my IP address are open or closed? Are there any tools that show both open ports and my public IP address in one place?
II
see attached. The United States homeland security enterprise is intentionally decentralized, relying on a complex interplay between federal and state agencies, local authorities, and community stakeholders. The National Incident Management System (NIMS), the National Response Framework (NRF), and the whole-community approach are designed to create integration and interoperability but not