Patent attributes
In order to offer domain name resolution services vis-à-vis resources of various security domains of a communication network, an item of equipment, on reception of a domain name resolution request coming from a client device, performs: authentication operations checking whether the client device that sent the request was previously registered; authorisation operations checking whether the client device actually has right of access to the resources of said domain name; and domain name resolution operations by means of a cache storing associations of IP addresses and domain names. The cache is populated by means of the results of domain name resolutions performed by external name servers to which said equipment resort to via respective secure tunnels, independently of said security domains, when the cache does not include data allowing to effect the domain name resolution required.
