After that, wait a few seconds until the tool finishes the port scanning to get the results of open or closed ports on the target system.
The tool will scan the most common TCP ports that are running on systems such as 21, 22, 23, 25, 53, 80, 110, 443, 445, 3306, 6379, 8080 etc
What are TCP Ports
TCP ports are communication channels used by the Transmission Control Protocol (TCP) in computer networking. They enable TCP to establish connections between devices and transfer data reliably over the network.
Each TCP port is identified by a unique number, ranging from 0 to 65535. Ports 0 to 1023 are reserved for system ports with special uses, while ports 1024 to 65535 are available for general use. TCP ports are used in conjunction with IP addresses to specify the destination of data packets.
Difference Between TCP and UDP Ports
There is no difference between TCP and UDP ports themselves. Ports are simply communication channels used by both Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) in computer networking.
However, TCP and UDP differ in how they use these ports. TCP is a connection-oriented protocol that establishes a reliable and ordered stream of data between devices. TCP ports are used to identify these connections and ensure that data is transmitted accurately.
UDP, on the other hand, is a connectionless protocol that does not establish a connection before sending data. UDP ports are used to identify the destination of data packets, but there is no guarantee that the packets will arrive in order or without errors.