Which configuration tool is commonly used to manage network devices?

The Network Configuration Protocol (NETCONF) is designed specifically for managing network devices such as routers, switches, and firewalls. It provides a mechanism for installing, manipulating, and deleting the configuration of network devices, making it particularly valuable in complex network environments that require automation and precise control over device settings.

NETCONF operates primarily over the Extensible Markup Language (XML) and allows for seamless communication between a network management system and network devices. Its use of established protocols and methods for exchanging configuration data makes it a favored choice for network management tasks. This protocol also supports transaction-based operations and provides capabilities for version control, making it easier to manage device configurations systematically.

In contrast, the other options do not serve the specific purpose of managing network device configurations. HyperText Transfer Protocol (HTTP) is primarily used for transferring hypertext requests and information on the web, while Secure Sockets Layer (SSL) is focused on securing communications over a computer network. Internet Control Message Protocol (ICMP) is utilized for error messaging and diagnostic functions in a network rather than configuration management. Thus, NETCONF stands out as the most suitable tool for managing device settings in network environments.