This Port is Closed Better check these ports before the hackers dock into your network. Before cybercriminals drop your client's organization into a maelstrom, help them close these loopholes. The well-known ports are usually system or fundamental services and come from the Unix world.
Registered ports are just that, enrolled and listed by a number authority.
Although port-number assignments now are officially controlled by the Internet Corporation for Assigned Names and Numbers , access to the official application and list is through the Internet Assigned Numbers Authority site. Find out how. All Rights Reserved.