使用Windows Communication Foundation 的一点问题

  我在使用这个服务时，如果在自己机子上的话，客户端程序使用没问题，但是换成别的机子就说调用方未进行身份验证，在高级编程里它告诉了一种增加身份的方法，但是不能用，请问有没有使用过这个技术的高人指点我一下，怎么加身份啊，别的机子怎么使用我的服务啊？附上主机和客户端的配置文件<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.web>
    <compilation debug="true" />
  </system.web>
  <!-- 部署服务库项目时，必须将配置文件的内容添加到 
  主机的 app.config 文件中。System.Configuration 不支持库的配置文件。-->
  <system.serviceModel>
    <services>
      <service behaviorConfiguration="RoomReservationsService.Service1Behavior"
        name="RoomReservationsService.RoomReservationService">
        <endpoint address="" binding="wsHttpBinding" contract="RoomReservationsService.IRoomService" />
        <!--<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />-->
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8731/Design_Time_Addresses/RoomReservationsService/" />
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="RoomReservationsService.Service1Behavior">
          <!-- 为避免泄漏元数据信息，
          请在部署前将以下值设置为 false 并删除上面的元数据终结点  -->
          <serviceMetadata httpGetEnabled="True"/>
          <!-- 要接收故障异常详细信息以进行调试， 
          请将下值设置为 true。在部署前 
            设置为 false 以避免泄漏异常信息-->
          <serviceDebug includeExceptionDetailInFaults="False" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.serviceModel>
        <bindings>
            <wsHttpBinding>
                <binding name="WSHttpBinding_IRoomService" 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="Windows" negotiateServiceCredential="true"
                            algorithmSuite="Default" establishSecurityContext="true" />
                    </security>
                </binding>
                
            </wsHttpBinding>
        </bindings>
        <client>
            <endpoint address="http://10.187.202.41:8731/Design_Time_Addresses/RoomReservationsService/"
                binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IRoomService"
                contract="RoomService.IRoomService" name="WSHttpBinding_IRoomService">
                <identity>
                    <userPrincipalName value="CAT\猫" />
                </identity>
            </endpoint>
            
        </client>
    </system.serviceModel>
</configuration>