A method for handling connections of a first node located in a first network having a private address space is described. The method comprises receiving a service query for requesting a service concerning the first node from a second node, the service query comprising a global identifier of the first node, obtaining a local identifier of the first node for identifying the first node in the first network, sending the local identifier of the first node to a network element providing a connection to the first node, receiving a public identifier of the network element, and sending the public identifier of the network element to the second node. In this way, global reachability of nodes also in private networks can be achieved.