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?
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see attached During the Bush and Obama administrations and because of 9/11, the Department of Homeland Security (DHS) assumed lead responsibilities for many of the CIKR sectors assigning Sector-Specific Agencies (SSAs) to establish sector-specific protocols for protection. However, most of these sectors have the DHS as its SSA. Under this