In this article we will discuss TCP Server Processes, will make brief discussion on TCP Server Processes, In last article we discuss about The netstat Command.
TCP Server Processes
Each application process running on the server is configured to use a port number, either by default or manually, by a system administrator. An individual server cannot have two services assigned to the same port number within the same transport layer services.
For example, a host running a web server application and a file transfer application cannot have both configured to use the same port (for example, TCP port 80). An active server application assigned to a specific port is considered to be open, which means that the transport layer accepts and processes segments addressed to that port. Any incoming client request addressed to the correct socket is accepted, and the data is passed to the server application. There can be many ports open simultaneously on a server, one for each active server application.
Refer to Figures 1 through 5 to see the typical allocation of source and destination ports in TCP client/server operations.