How To Block Or Allow Ip Addresses From Accessing Your Site in .htaccess

Step 1. Enable mod_rewrite on your Apache web server.

Step 2. Create .htaccess file in root directory.

Step 3. If you want to block the 192.185.1.2 & Allow 185.185.1.2 IP address, you type in .htaccess file

         Order Allow,Deny
         Deny from 192.185.1.2
         Allow from 185.185.1.2

Step 4. Restart Apache Server  
        sudo service apache2 restart