Some embodiments provide a method for displaying information about a data message. Through a graphical user interface (GUI) that provides a visualization of paths for a plurality of data messages in a network, the method receives a selection of a particular data message. In response to the selection, the method displays in the GUI (i) a set of characteristics of the selected data message, (ii) a path through a set of services of the network traversed by the selected data message, (iii) information regarding additional data messages sharing at least a subset of the set of characteristics of the selected data message, and (iv) information regarding one or more service rules applied to the data message at one or more of the services.