/etc/apache2/conf/subdomain.conf
<VirtualHost 1.2.3.4:443>
ServerName subdomain.domain.net
ServerAdmin webmaster@domain.net
CustomLog /var/logs/subdomain_access_log combined
ErrorLog /var/logs/subdomain_error_log
DocumentRoot /home/subdomain
LogLevel warn
<Directory "/home/chapters/subdomain">
Options Includes ExecCGI FollowSymlinks
AllowOverride All
Order allow,deny
Allow from all
AuthType Basic
AuthName "Restricted Content"
AuthUserFile /etc/apache2/.htpasswd
Require valid-user
</Directory>
SSLEngine on
SSLCertificateFile /tmp/fullchain.pem
SSLCertificateKeyFile /tmp/privkey.pem
SSLCertificateChainFile /tmp/chain.pem
SSLCACertificateFile /tmp/cert.pem
</VirtualHost>