ipv4： 
for ip in 
173.245.48.0/20  
103.21.244.0/22  
103.22.200.0/22  
103.31.4.0/22  
141.101.64.0/18  
108.162.192.0/18  
190.93.240.0/20  
188.114.96.0/20  
197.234.240.0/22  
198.41.128.0/17  
162.158.0.0/15  
104.16.0.0/13  
104.24.0.0/14  
172.64.0.0/13  
131.0.72.0/22 
do 
sudo ufw allow from $ip to any port 80 proto tcp; 
sudo ufw allow from $ip to any port 443 proto tcp; 
done 
ipv6： 
fo...