![]() In this tutorial, you will open an ephemeral port on Linux, since the most common services use the well-known ports. Port numbers 49152 to 65535 are called the dynamic/private ports. ![]() ![]() Port numbers 1024 to 49151 are called the registered/user ports.Port numbers above 1024 are referred to as ephemeral ports. These include SSH (port 22), HTTP (port 80), HTTPS (port 443). The first 1024 ports (port numbers 0 to 1023) are referred to as well-known port numbers and are reserved for the most commonly used services. This can be changed by manually configuring the service to use a different port, but in general, the defaults can be used. Typically, ports identify a specific network service assigned to them. Within an operating system, a port is opened or closed to data packets for specific processes or network services.
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