calling secure web service

Hi,

I need to consume a secure service but before doing this i need to be authenticated by way of a login certificate.

I have uploaded the client certificate provided into STRUST.  When i try to create the client proxy classes by way of the service consumer wizard i receive the below error.

"HTTP error(return code 404, message "connection failed")

URL for the WSDL file is https://secure.authenticator.uat.uk.experian.com/WASPAuthenticator/TokenService.asmx?WSDL

If i navigate to the URL i am presented with the upload certificate and then continue on to see the wsdl file.

on further investigation SMICM trace file shows below...

[Thr 5452] Sat Mar 30 17:23:12 2013

[Thr 5452] *** WARNING => Connection request from (94/17263/1) to host: secure.authenticator.uat.uk.experian.com, service: 443  failed (NIECONN_REFUSED)

[Thr 5452] RM-T94, U17263, 900 STEELED, PCG529, 17:22:59, M1, W35, SEU_, 5/2 {000002cf} [icxxconn.c 2271]

I have downloaded the wsdl file and been able to create the client proxies from local file but when i use the below code i am still receiving an error.

       create object lo_experian_auth.
     catch cx_ai_system_fault into lo_sys_exception..
       message lo_sys_exception type 'I'.
   endtry.


   data requestblock type string.
   concatenate '<WASPAuthenticationRequest>'
               '<ApplicationName>optional param</ApplicationName>'
               '<AuthenticationLevel>CertificateAuthentication</AuthenticationLevel>'
               '<AuthenticationParameters/>'
               '</WASPAuthenticationRequest>' into ls_request-authentication_block.
   try.

       call method lo_experian_auth->sts
         exporting
           input  = ls_request
         importing
           output = ls_response.
     catch cx_ai_system_fault into lo_sys_exception.
       message lo_sys_exception type 'I'.
   endtry.
   commit work.

Throws exception...

SOAP:1,023 SRT: Processing error in Internet

Communication Framework: ("ICF Error when

receiving the response:

ICM_HTTP_CONNECTION_FAILED")

and SMICM trace shows.....

6076] Sat Mar 30 17:31:20 2013

6076] *** WARNING => Connection request from (94/17263/1) to host: secure.authenticator.uat.uk.experian.com, service: 16500

6076] RM-T94, U17263, 900 STEELED, PCG529, 17:31:19, M1, W35, SEU_, 5/2 {000002e5} [icxxconn.c 2271]

Can anyone shed some light on what is going wrong here??

Many thanks....