WCF Windows Service with ASP.net Application authentication problem...

[JD86]

I'm trying to get a ASP.net application to talk to a WCF Windows Service. Both are on the same internal network and belong to the same domain, but are on different machines. When connecting I see on the tracing log on my WCF Windows Service:

System.IdentityModel.Tokens.SecurityTokenValidationException: The service does not allow you to log on anonymously.

From what I understand WCF will use windows authentication by default. How do I pass credentials to the WCF service? This is how i'm connecting from the ASP.net client:

    public static string Authenticate(string username, string password)
    {
        DomainControllerClient dc = null;

        try
        {
            dc = new DomainControllerClient();
            dc.Open();

            bool success = dc.Authenticate(username, password);
            if (success)
                return "OK";
            else
                return "FAIL";
        }
        catch (Exception ex)
        {
            return ex.ToString();
        }
        finally
        {
            if (dc.State == CommunicationState.Opened)
                dc.Close();
            else if (dc.State == CommunicationState.Faulted)
                dc.Abort();

            dc = null;
        }
    }

** BTW I'm using netTcpBinding

[JD86]

Found an article: Implement Windows authentication and security in WCF Service[^] Would this be the best way? Put the credentials in the web.config appsettings section and use those for each call?