Public Shared Function CreateCustomBinding() As Binding 
    ' Create an empty BindingElementCollection to populate, 
    ' then create a custom binding from it.
    Dim outputBec As New BindingElementCollection()

    ' Create a SymmetricSecurityBindingElement.
    Dim ssbe As New SymmetricSecurityBindingElement()

    ' Set the algorithm suite to one that uses 128-bit keys.
    ssbe.DefaultAlgorithmSuite = SecurityAlgorithmSuite.Basic128

    ' Set MessageProtectionOrder to SignBeforeEncrypt.
    ssbe.MessageProtectionOrder = MessageProtectionOrder.SignBeforeEncrypt

    ' Use a Kerberos token as the protection token.
    ssbe.ProtectionTokenParameters = New KerberosSecurityTokenParameters()

    ' Add the SymmetricSecurityBindingElement to the BindingElementCollection.
    outputBec.Add(ssbe)
    outputBec.Add(New TextMessageEncodingBindingElement())
    outputBec.Add(New HttpTransportBindingElement())

    ' Create a CustomBinding and return it; otherwise, return null.
    Return New CustomBinding(outputBec)

End Function 

public static Binding CreateCustomBinding()
{
    // Create an empty BindingElementCollection to populate, 
    // then create a custom binding from it.
    BindingElementCollection outputBec = new BindingElementCollection();

    // Create a SymmetricSecurityBindingElement.
    SymmetricSecurityBindingElement ssbe = 
        new SymmetricSecurityBindingElement();

    // Set the algorithm suite to one that uses 128-bit keys.
    ssbe.DefaultAlgorithmSuite = SecurityAlgorithmSuite.Basic128;

       // Set MessageProtectionOrder to SignBeforeEncrypt.
    ssbe.MessageProtectionOrder = MessageProtectionOrder.SignBeforeEncrypt;

    // Use a Kerberos token as the protection token.
    ssbe.ProtectionTokenParameters = new KerberosSecurityTokenParameters();

    // Add the SymmetricSecurityBindingElement to the BindingElementCollection.
    outputBec.Add ( ssbe );
    outputBec.Add(new TextMessageEncodingBindingElement());
    outputBec.Add(new HttpTransportBindingElement());

    // Create a CustomBinding and return it; otherwise, return null.
    return new CustomBinding(outputBec);
}