Hello,

I'm trying to get a WCF service configured to authenticate the client using X509 certificates. The service is hosted by IIS 6 and I'm getting an error that I didn't receive while testing and hosting in a console. In fact, this exact configuration works when not running is IIS. One fact about my system is that I'm running the host and the client on the same machine. I have not yet reproduced the problem across different machines. I've confirmed that all the certificates are in the right places and that the ASPNET user has been granted permission to all certificates. Has anyone had issues running this configuration in IIS? Thanks!

The error:
Unhandled Exception: System.ServiceModel.Security.SecurityNegotiationException: Secure channel cannot be opened because security negotiation with the remote endpoint has failed. This may be due to absent or incorrectly specified EndpointIdentity in the EndpointAddress used to create the channel. Please verify the EndpointIdentity specified or implied by the EndpointAddress correctly identifies the remote endpoint.

My web.config:

<?xml version="1.0"?>
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<system.serviceModel>
<services>
<service name="MCPServices.MCPService" behaviorConfiguration="MCPServicesBehavior">
<endpoint address=""
contract="MCPServices.IMCPService"
binding="wsHttpBinding"
bindingConfiguration="certificateBinding">
<identity>
<certificateReference storeName="My" storeLocation="LocalMachine" x509FindType="FindBySubjectName" findValue="localhost" />
</identity>
</endpoint>
</service>
</services>
<bindings>
<wsHttpBinding>
<!-- X509 Certificate binding -->
<binding name="certificateBinding">
<security mode="Message">
<message clientCredentialType="Certificate"/>
</security>
</binding>
</wsHttpBinding>
</bindings>
<behaviors>
<!-- Before deployment, you should remove includeExceptionDetailInFaults="true" from any behaviors -->
<serviceBehaviors>
<behavior name="MCPServicesBehavior">
<serviceDebug includeExceptionDetailInFaults="true" />
<serviceMetadata httpGetEnabled="true" />
<serviceCredentials>
<serviceCertificate findValue="localhost" storeLocation="LocalMachine" storeName="My" x509FindType="FindBySubjectName"/>
<clientCertificate>
<authentication certificateValidationMode="Custom" customCertificateValidatorType="MCPServices.CustomX509CertificateValidator, App_Code/Service.cs"/>
</clientCertificate>
</serviceCredentials>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
<system.web>
<compilation debug="true">
<assemblies>
<add assembly="System.Security, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="Microsoft.Transactions.Bridge, Version=3.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="SMDiagnostics, Version=3.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.IdentityModel.Selectors, Version=3.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.DirectoryServices, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="System.Web.RegularExpressions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="System.Transactions, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
<add assembly="System.Messaging, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
<add assembly="System.ServiceProcess, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/></assemblies></compilation>
</system.web>
</configuration>

My client app.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
<system.serviceModel>
<bindings>
<wsHttpBinding>
<binding name="WSHttpBinding_IMCPService" closeTimeout="00:01:00"
openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00"
bypassProxyOnLocal="false" transactionFlow="false" hostNameComparisonMode="StrongWildcard"
maxBufferPoolSize="524288" maxReceivedMessageSize="65536"
messageEncoding="Text" textEncoding="utf-8" useDefaultWebProxy="true"
allowCookies="false">
<readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384"
maxBytesPerRead="4096" maxNameTableCharCount="16384" />
<reliableSession ordered="true" inactivityTimeout="00:10:00"
enabled="false" />
<security mode="Message">
<transport clientCredentialType="Windows" proxyCredentialType="None"
realm="" />
<message clientCredentialType="Certificate" negotiateServiceCredential="true"
algorithmSuite="Default" establishSecurityContext="true" />
</security>
</binding>
</wsHttpBinding>
</bindings>
<client>
<endpoint address="http://localhost/Service.svc"
behaviorConfiguration="MCPServicesBehavior"
binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IMCPService"
contract="IMCPService" name="WSHttpBinding_IMCPService">
<identity>
<certificateReference storeName="My" storeLocation="LocalMachine" x509FindType="FindBySubjectName" findValue="localhost"/>
</identity>
</endpoint>
</client>
<behaviors>
<endpointBehaviors>
<behavior name="MCPServicesBehavior">
<clientCredentials>
<serviceCertificate>
<authentication certificateValidationMode="PeerOrChainTrust" />
</serviceCertificate>
<clientCertificate findValue="hades" storeLocation="CurrentUser" storeName="My" x509FindType="FindBySubjectName"/>
</clientCredentials>
</behavior>
</endpointBehaviors>
</behaviors>
</system.serviceModel>
</configuration>