Port 443 is a virtual port used for Internet network traffic and connection purposes.
Port 443: What It Is and Why We Use It
There are many different types of ports when it comes to computers. Network ports are not physical ports on a computer or other device. Instead, they are virtual.
Network ports are numbered addresses, such as port 80, port 443, port 22, and port 465, that computers can use to direct the right type of network traffic to the right place.
When you go to a website, your computer connects to the server that hosts the website. It looks for a connection on the HTTP or HTTPS port, because these ports are associated with web traffic.
