Access with HTTPS to a HTTP server

I got a HTTP server but I would like the user to access via HTTPS to a gateway server and redirect to HTTP real page.

I saw some solutions.

a) Apache-SSL (or Apache + OpenSSL + mod_ssl). But it is complex to install and configure in a Microsoft enviroment.

b) OpenSSL + Stunnel. Quite simple... by now it's my first choice.

c) ISA Server 2004. Quite complex... isn't it?

If I like the gateway in Windows which of these three is the best. Few concurrency... I think 4 concurrent user will be the peak usage.

I saw programs that you install in Windows to do that:

a) at32 You can find it at:

b) Orenosp. You can find it at

Any other program? I'm trying to find a simple program because it is only a test.

Thank you in advance, Fidelio