Hi there,

I am not able to consume a wcf service from our Intranet WCF Server which is behind a IIS 7.5 reverse proxy.

From a public IP address my http application will call WCF services deployed at our corporate network via a IIS reverse proxy in our DMZ.

Internet WCF client ---> (HTTP) ---> DMZ reverse proxy  ---> (HTTP) ---> Intranet WCF server

If I browse from the internet to the the service like http://217.x.x.x:8888/Services/Service.svc or http://217.x.x.x:8888/Services/Service.svc?wsdl I see the domain name of the intranet WCF application server (=InternalApplicationServer), so the reverse proxy is working.

If I run svcutil “http://217.x.x.x:8888/Services/Service.svc?wsdl” I get the following error:
HTTP GET Error
URI: http://217.x.x.x:8888/Services/Service.svc?wsdl
The document was understood, but it could not be processed.
- The WSDL document contains links that could not be processed.
- There was as error downloading ‘http://InternalApplicationServer:8888/Services/Service.svc?xsd=xsd0’
- The remote name could not be resolved: ‘InternalApplicationServer’

I configured the following:

1. IIS Reverse proxy server:
- Create a new website “Services” (bindings: IP address=All Unassigned, Port=8888, Host name=empty)
- Physical path is set to empty directory
- Create a Server Farm and added Server InternalApplicationServer with httpPort 8888
- Use URL Rewrite to inspect incoming request = true

2. InternalApplicationServer
- Create a new website “Services” (bindings: IP address=All Unassigned, Port=8888, Host name=empty)
- Web.config of Service.svc:
<system.serviceModel>
    <services>     
      <service behaviorConfiguration="Services.ServicesBehavior"
        name="Services.Services">
        <endpoint address="" binding="wsHttpBinding" contract="Services.IServices">
          <identity>|
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
      </service>                        
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="Services.ServicesBehavior">
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>                     
      </serviceBehaviors>
    </behaviors> 
</system.serviceModel>

Do I miss something in my configuration?
Is there a server setting I need to change or should I update my binding?
Any help would be very much appreciated.

Regards,

Marcel