Global Filter Attribute.cs

public class Startup
{

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc(config =>
        {
            var requireAgent = new AuthorizationPolicyBuilder()
                .RequireAuthenticatedUser()
                .RequireRole(RoleNames.Agent)
                .Build();

            config.Filters.Add(new AuthorizeFilter(requireAgent));
        });

    ...


[AllowAnonymous]
public class HomeController : Controller
{