Exception occurred in communication Frame work webservices

Hi All,

I am new to use web services . here i am trying to consume service from external . but we are getting the error like "Exception occurred in communication framework:Error in HTTP Framework:404Hostname Unknownhttp://www.webservicex.com/CurrencyConvertor.asmx?wsdl "

kindly let me know that is any connection need to enabled ?

Regards,

Raju.