Apache Reference: mod_ssl, SSLCACertificatePath
Directory of PEM-Encoded CA Certificates for Client Authentication
Syntax: SSLCACertificatePath A
Example: SSLCACertificatePath etc/ssl/
Since: Apache 1.3
This directive sets the directory where you keep the certificates
of certification authorities (CAs) of those clients with which you deal.
It is used to verify the client certificate during client
authentication. The files in this directory must be PEM-encoded
and are accessed through hash file names. Typically, you have
to place the certificate files there and then create
symbolic links with the help of the Makefile in the
ssl.crt/ directory that comes with mod_ssl to accomplish this
task.