Can I use the same paid SSL certificate for OpenVPN and Apache?
UPDATE:
The purpose is to get a Estonian National ID card support to both. So that one, using this smart card, may authenticate himself with his personal PIN code for Apache for accessing restricted web pages and also authenticate himself to OpenVPN server using the same PIN. The issuer of the certificate is okay with this.
Best Answer
I believe the only thing you'd have to worry about is making sure the key usage and extended key usage on your cert match any key usage restrictions you've configured for OpenVPN.