Install mod_cloudflare for Apache
- curl -C - https://pkg.cloudflare.com/pubkey.gpg | sudo apt-key add - echo "deb http://pkg.cloudflare.com/ `lsb_release -cs` main" | sudo tee /etc/apt/sources.list.d/cloudflare.list. ...
- sudo apt-get update sudo apt-get install libapache2-mod-cloudflare. ...
- sudo service apache2 restart sudo apache2ctl -M.