Require Authentication for all requests to an OWIN application

I am working with a self-hosted OWIN application and am trying to figure out how to require authentication/authorization for all requests (or arbitrary requests).

Some of the individual components in the pipeline have their own Authorization facilities (ex. WebAPI, SignalR, Nancy) but that seems somewhat redundant when I want to restrict everything. Additionally, some middle-ware does not have authorization support (ex. Microsoft.Owin.StaticFiles).

If my OWIN Startup looks something like this:

public class Startup
    public void Configuration(IAppBuilder app)

        app.UseCookieAuthentication(new CookieAuthenticationOptions());

        // ** Need to add something that restricts access **


How do I require the user have authenticated (redirecting if necessary) before serving the directory browser? (The directory browser could arbitrarily be other OWIN components.)


Put this between your auth middleware and the components you want to protect. It will check to ensure that each request is authenticated.

        app.Use(async (context, next) =>
            var user = context.Authentication.User;
            if (user == null || user.Identity == null || !user.Identity.IsAuthenticated)
            await next();

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