When downloading Apache from apache.org for Microsoft Windows Operating System, you are given two options:
- Win32 Binary without crypto (no mod_ssl) (MSI Installer)
- Win32 Binary including OpenSSL 0.x (MSI Installer)
OpenSSL is an open-source implementation of SSL and TLS protocols. mod_ssl is a package that provides cryptography for Apache via SSL and TLS. SSL and TLS specify how to securely encrypt and send confidential information over HTTP.
If your website will be collecting sensitive information like credit card numbers then you should install binary with openssl otherwise choose Win32 Binary without crypto.