How to use Zenfirewall with apache

The steps to add ZenFirewall IPs to your Apache configuration are as follows:

1. Download the blocklist file and generate a configuration file suitable for Apache. This command can be added to a cron job and executed once or twice per day:

   curl -sf https://zenfirewall.com/zenblock.txt | sed 's/$/ BLOCKED/' > /etc/apache2/blocked_ips.txt

2. In each virtual host where you want to apply this list:

   <VirtualHost *:80>
       ServerName test.com
   
       RewriteEngine On
       RewriteMap blocked_ips txt:/etc/apache2/blocked_ips.txt
       RewriteCond ${blocked_ips:%{REMOTE_ADDR}|NOT_BLOCKED} !=NOT_BLOCKED
       RewriteRule ^ - [F]
   
       # ...
   
   </VirtualHost>