In which configuration is RouterOS utilizing the DNS feature?

In a hotspot configuration, RouterOS employs the DNS feature to manage user access to the network. When a user connects to a hotspot, the router can redirect DNS requests to a specific IP address, allowing for the management of web browsing and ensuring users are directed to the correct login page or terms of service. This configuration leverages DNS to control domain name resolution and facilitate a seamless user experience, enabling the hotspot to display captive portal pages for authentication and access control.

In the case of the other configurations, while they may involve network traffic or address handling, they do not primarily utilize the DNS feature in the context of user management or redirecting based on DNS queries. For instance, a layer-7 packet filter focuses on traffic inspection and filtering based on specific patterns rather than DNS resolution. Web-proxy setups may involve DNS caching and forwarding, but they serve a different purpose, primarily concentrating on proxying HTTP/HTTPS traffic rather than managing user access via DNS. PPP configurations manage point-to-point connections and authentication, without directly interacting with DNS in the same way hotspot configurations do.