A hostname (in English hostname) is a unique identifier for a computer or device that is connected to the Internet. It acts as an address used to reach and communicate with the specific device in a network.
The hostname usually consists of two parts: the machine name and the domain name. The machine name can be optional and is often chosen by the owner of the device, while the domain represents the parent network where the device is registered.
For example, the hostname "minenet" can be linked to the domain "mittforetag.com". Together they form the host name "mineneht.mittforetag.com".
See also: What is FQDN?
The host name is used to facilitate communication between different devices within the same network or over the Internet. By sending data to the correct hostname, one can ensure that the information reaches the correct destination without conflicts.
In addition to its functional role, the hostname is also important for identification and authentication on the Internet. It can be used to protect systems against unauthorized access by requiring valid credentials based on the hostname during login or file transfer.
In summary, the hostname is an important component of the internet's infrastructure as it enables the correct routing of data as well as the secure identification and authentication of devices within different networks.
