show rules
ufw status
insert rule
ufw insert 1 allow from 107.7.94.97 to any port 3306
delete a rule
ufw status numbered ufw remove 1
allow from several ip’s
ufw allow from 15.15.15.0/24 while read i; do ufw allow from $i; done <ip_cloud ufw allow in on eth1 to any port 80; ufw allow in on eth1 to any port 443; ufw delete allow 80; ufw delete allow 443
block an ip
ufw deny from ip-address-here to any