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A zero-configuration network is an IP network that is configured without using any manual configuration or configuration servers. This setup allows someone without networking expertise to connect computers, printers and other network devices and receive automatic network functionality. Automatic functions include allocating IP addresses, translating between domain names and IP addresses, and locating services such as printing without employing a directory service.
A zero-configuration network is also known as a zeroconf network or sometimes just zeroconf.
A zero-configuration network is usually employed for home and small business network setup, where the security risk is low and it is difficult or impossible to set up a normal IP network. Common uses are for short-notice meetings or small conferences. Thus, the need for services such as Dynamic Host Configuration Protocol and domain name system (DNS) servers is eliminated, along with having to set up each computer’s network settings manually.
Zeroconf is based on three technologies:
Service discovery protocols automatically detect connected network services and devices. These protocols include:
Because zeroconf networks use multicast domain name service, they are more vulnerable to spoofing attacks.
Major implementations of zeroconf networks include Apple’s Bonjour, Avahi, Windows CE 5.0, Jini and Zeroconf, a stand-alone package based on Simple IPv4LL.