Johann Smith wrote:

Hi, I have stunnel running as an https server. Can stunnel handle/ validate client certificates in this mode?

Yes.

How are authentication details forwarded to the http backend, by additional headers?

X-Forwarded-For support is on my TODO list: http://www.stunnel.org/?page=sdf_todo Feel free to become a sponsor. There are also some third party patches that you could apply if you're brave. Mike