How to call external webservice behind proxy server?

Issue

Our route is like below,

from("file://d:/temp/ws/")
.routeId("ws_test")
.log("call ws")
.to("cxf://http://www.webservicex.net/globalweather.asmx?serviceName={http://www.webservicex.net/}GetWeather&portName={http://www.webservicex.NET/}GlobalWeatherSoap&dataFormat=MESSAGE")
.log("${body}");

We want to visit a external webservice,can you please inform me how we should handle the calling of an external webservice from Fuse from behind a proxy? Do we need to set it up in the Blueprint for that bundle?