Basic service behaviour with username and password authentication

gistfile1.xml

<behaviors>
    <serviceBehaviors>
        <behavior name ="beh_auth">
            <serviceMetadata/>
            <serviceCredentials>
                <userNameAuthentication
                    userNamePasswordValidationMode="Custom"
                    customUserNamePasswordValidatorType="YOUR_HOST_NAMESPACE.YOUR_CUSTOM_VALIDATOR, YOUR_ASSEMBLY_NAME"/>
                <serviceCertificate
                    findValue="YOUR_CERT_NAME"
                    storeLocation="LocalMachine"
                    storeName="My"
                    x509FindType="FindBySubjectName"/>
                <clientCertificate>
                    <authentication certificateValidationMode="None"/>
                </clientCertificate>
            </serviceCredentials>
        </behavior>
    <serviceBehaviors>
<behaviors>