--- httpd.conf ----
Listen 80
#add below
Listen 443
...
#comment out below since now ip-based
#NameVirtualHost *:80
...
<VirtualHost IP_ADDRESS_1:80>
DocumentRoot /www/example1
ServerName www.example1.com
</VirtualHost>

<VirtualHost IP_ADDRESS_2:80>
DocumentRoot /www/example2
ServerName www.example2.org
</VirtualHost>

<VirtualHost IP_ADDRESS_1:443>
DocumentRoot /www/example1
ServerName www.example1.com

SSLEngine on
SSLProtocol all
SSLCertificateFile /home/web/example1_certs/public.crt
SSLCertificateKeyFile /home/web/example1_certs/private.key
SSLCACertificateFile /home/web/example1_certs/intermediate.crt
</VirtualHost>

<VirtualHost IP_ADDRESS_2:443>
DocumentRoot /www/example2
ServerName www.example2.org

SSLEngine on
SSLProtocol all
SSLCertificateFile /home/web/example2/public.crt
SSLCertificateKeyFile /home/web/example2/private.key
SSLCACertificateFile /home/web/example2/intermediate.crt
</VirtualHost>

---- ssl.conf -----
Listen 443

SSLCertificateFile /home/web/example2/public.crt
SSLCertificateKeyFile /home/web/example2/private.key
SSLCACertificateFile /home/web/example2/intermediate.crt
-------