为什么我得到这个错误时，试图连接到我的WCF服务

The caller was not authenticated by the service.

我在一台机器上的windows服务中托管了一个WCF服务，我在另一台机器上有另一个windows服务，作为客户端连接到第一台机器上的WCF服务。我猜这和安全有关，但我不知道该怎么做。下面是客户端的app.config:

<system.serviceModel>
    <bindings>
        <wsDualHttpBinding>
            <binding name="WSDualHttpBinding_IWCFService" 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">
                <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" 
                              maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
                <reliableSession ordered="true" inactivityTimeout="00:10:00"/>
                <security mode="Message">
                    <message clientCredentialType="Windows" negotiateServiceCredential="true" 
                             algorithmSuite="Default"/>
                </security>
            </binding>
        </wsDualHttpBinding>
    </bindings>
    <client>
        <endpoint address="http://localhost:8731/Design_Time_Addresses/WCF/WCFService/" 
                  binding="wsDualHttpBinding" bindingConfiguration="WSDualHttpBinding_IWCFService" 
                  contract="WCFService.IWCFService" name="WSDualHttpBinding_IWCFService">
            <identity>
                <dns value="localhost"/>
            </identity>
        </endpoint>
    </client>
</system.serviceModel>

和服务的app.config:

<system.serviceModel>
<services>
  <service name="WCF.WCFService" behaviorConfiguration="WCFBehavior">
    <endpoint address="" binding="wsDualHttpBinding" contract="WCF.IWCFService">
      <identity>
        <dns value="localhost" />
      </identity>
    </endpoint>
    <endpoint
      address="mex"
      binding="mexHttpBinding"
      bindingConfiguration=""
      contract="IMetadataExchange"/>
    <host>
      <baseAddresses>
        <add baseAddress="http://localhost:8731/Design_Time_Addresses/WCF/WCFService/" />
      </baseAddresses>
    </host>
  </service>
</services>
<behaviors>
  <serviceBehaviors>
    <behavior name="WCFBehavior">
      <serviceMetadata httpGetEnabled="true"/>
      <serviceDebug includeExceptionDetailInFaults="true" />
    </behavior>
  </serviceBehaviors>
</behaviors>

我需要做什么才能连接到我的WCF服务。

另一件要注意的事情是，我创建了一个简单的控制台应用程序作为wcf服务的客户端，它能够毫无问题地连接到该服务，并且app.config文件看起来是相同的。也许这与作为不同用户运行的客户端服务有关?我可以删除任何和所有的安全，但不知道如何。