<configuration>
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="ServiceBehavior">
<serviceCredentials>
<clientCertificate>
<authentication certificateValidationMode="Custom" customCertificateValidatorType="Samples.MyValidator, service" />
</clientCertificate>
</serviceCredentials>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
</configuration>