Updating Apache to Named Virtual Hosts For Multiple SSL Certificates on the Same 1 IP Address

gistfile1.txt

# BE VERY CAREFUL IF YOU CHANGE YOUR Apache CONFIGURATION
# Backup your configuration before changing and run an error check before applying changes

# If you have 1 IP address for each SSL certificate then you probably don't need to do any of this
# If you have more than 1 site per IP address then this worked for me.
# It requires Apache with with SNI, which should already be part of Apache since it's been around for many years
# For more info see https://www.digicert.com/ssl-support/apache-multiple-ssl-certificates-using-sni.htm
# I changed to named Virtual Hosts https://httpd.apache.org/docs/2.2/en/vhosts/name-based.html , like this
vi /etc/httpd/conf/httpd.conf

# then change the port 443 NameVirtualHost to  
NameVirtualHost *:443

# and for all https (port 443) virtual hosts sharing the same IP address change the opening tag
# of the part 443 vhost to the following
<VirtualHost *:443>

# Run an error check, which is usually like
/usr/sbin/apachectl configtest

# then restart Apache (for CentOS 6)
/etc/init.d/httpd reload

# CentOS 7 restart
systemctl reload httpd