Network service
A network service is an abstracted function that is made available to users or participating devices by a computer network. The focus is on the fact that a service represents a self-contained functional component from the user's point of view; this function can be implemented technically via one or more network protocols of the application layer. For example, the World Wide Web is a service that the Internet provides; this service is technically implemented using the Hypertext Transfer Protocol network protocol .
What is common to network services is that existing resources are shared. In many systems, service providers offer so-called services that other workstations can use to access the resources. Those who request and use these different services are called service customers.
Basically, one can differentiate between different modes of operation of a network operating system:
- Server- centric networks
- Peer-to-Peer Networks
Overview of network services
Which services are available in the network and how they are used can decide which network operating system is used. There are core network services:
- Addressing ( DHCP )
- IP address management ( IPAM )
- Authentication ( RADIUS )
- Configuration ( TFTP , HTTP )
- Name resolution ( DNS )
- Time ( NTP )
There are also the following:
- Printing service
- Message service ( email )
- Application service
- Database service