Client certificate selection

Question

I have a https apache server that needs client verification. But when somebody is browsing this site there is need to select proper cert from list of certificates installed in browsers. What can I do to become client cert default to my webpage (so clients do no need to select cert)

Answer 1

It depends on the web browser. Some (such as IE, Opera or Chrome) always ask.

Answer 2

I think most browsers and servers will allow the server to specify a list of CAs that would be acceptable issues for authenticating to the server.