Xinetd based services
Will be started/stopped based on the run level
Doesn’t depend on run levels
Once turned on, it will continue to run till it stopped
The dameon ‘xinetd’ controls starting and stopping the service as and when it requires. The xinetd dameon listens for requests coming for particular port and starts the relevant service pertaining to it. For example, when telnet is turned on, it listens for request on port 23 and start the telnet service when there is a telnet connection request.
Service should be continuously running regardless of its usage. For example, in the below output, cups service is continuously though it isn't required for many servers. This can be turned off.
Xinetd dameon performs the job of continuously monitoring the service request under its control and activate it only when it is required.
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