PHP-FPM on Apache with split configuration per site – Dimitri.eu http://www.dimitri.eu/php-fpm-apache-split-config-per-site/
Configuring Apache/PHP/MySQL for Low Memory (RAM) VPS | NARGA https://www.narga.net/optimizing-apachephpmysql-low-memory-server/
Authentication and Authorization – Apache HTTP Server Version 2.4 http://httpd.apache.org/docs/current/howto/auth.html
Guide to combining Apache virtual hosts and PHP7 FPM – Koen Reiniers dev blog http://blog.koenreiniers.nl/guide-to-combining-apache-virtual-hosts-and-php7-fpm/
The Perfect Server – Ubuntu 16.04 (Xenial Xerus) with Apache, PHP, MySQL, PureFTPD, BIND, Postfix, Dovecot and ISPConfig 3.1 https://www.howtoforge.com/tutorial/perfect-server-ubuntu-16.04-with-apache-php-myqsl-pureftpd-bind-postfix-doveot-and-ispconfig/
Using PHP-FPM with Apache on Ubuntu 16.04 https://www.howtoforge.com/tutorial/apache-with-php-fpm-on-ubuntu-16-04/
Running php as fastcgi vs Apache mod with dir permissions of 777 – Server Fault https://serverfault.com/questions/349380/running-php-as-fastcgi-vs-apache-mod-with-dir-permissions-of-777
Apache 2.4 with php5-fpm | DigitalOcean https://www.digitalocean.com/community/questions/apache-2-4-with-php5-fpm
How To Configure Nginx as a Web Server and Reverse Proxy for Apache on One Ubuntu 16.04 Server | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-configure-nginx-as-a-web-server-and-reverse-proxy-for-apache-on-one-ubuntu-16-04-server#step-6-—-installing-and-configuring-nginx
How to configure HTTP Strict Transport Security (HSTS) on Apache & NGINX | IT Igloo https://itigloo.com/security/how-to-configure-http-strict-transport-security-hsts-on-apache-nginx/
Batch RewriteRule Generator (301 / Rewrite) – Donat Studios https://donatstudios.com/RewriteRule_Generator
How To Configure Apache to Use Custom Error Pages on Ubuntu 14.04 | DigitalOcean https://www.digitalocean.com/community/tutorials/how-to-configure-apache-to-use-custom-error-pages-on-ubuntu-14-04
When not to use mod_rewrite – Apache HTTP Server Version 2.4 http://httpd.apache.org/docs/current/rewrite/avoid.html#redirect
apache 2.2 – Serve http (port 80) and https (port 443) on same VirtualHost – Server Fault http://serverfault.com/questions/303744/serve-http-port-80-and-https-port-443-on-same-virtualhost
apache – How to create a virtual host that works with both http and https? – Stack Overflow http://stackoverflow.com/questions/19852817/how-to-create-a-virtual-host-that-works-with-both-http-and-https
An In-Depth Discussion of Virtual Host Matching http://httpd.apache.org/docs/current/vhosts/details.html
How to disable default VirtualHost in apache2? http://serverfault.com/questions/114931/how-to-disable-default-virtualhost-in-apache2
How to disable the default document root in Apache? http://serverfault.com/questions/705169/how-to-disable-the-default-document-root-in-apache
Authentication and Authorization – Apache HTTP Server Version 2.4 https://httpd.apache.org/docs/2.4/howto/auth.html
mod_auth_basic – Apache HTTP Server Version 2.4 https://httpd.apache.org/docs/2.4/mod/mod_auth_basic.html#authbasicprovider
htdbm – Manipulate DBM password databases – Apache HTTP Server Version 2.4 https://httpd.apache.org/docs/2.4/programs/htdbm.html
Slicehost Articles: Enabling and using apache’s mod_status on Ubuntu http://articles.slicehost.com/2010/3/26/enabling-and-using-apache-s-mod_status-on-ubuntu
Setting the Hostname & Fully Qualified Domain Name (FQDN) on Ubuntu 12.04 or CentOS 6.4 https://github.com/DigitalOcean-User-Projects/Articles-and-Tutorials/blob/master/set_hostname_fqdn_on_ubuntu_centos.md
How To Use RKHunter to Guard Against Rootkits on an Ubuntu VPS https://www.digitalocean.com/community/tutorials/how-to-use-rkhunter-to-guard-against-rootkits-on-an-ubuntu-vps
How to Password Protect Your WordPress Admin (wp-admin) Directory http://www.wpbeginner.com/wp-tutorials/how-to-password-protect-your-wordpress-admin-wp-admin-directory/
URL Rewriting for Beginners – Added Bytes by Dave Child http://www.addedbytes.com/for-beginners/url-rewriting-for-beginners/