Allow ufw firewall in ubuntu

enable firewall - sudo ufw enable
reload firewall - sudo ufw reload
disable firewall - sudo ufw disable
allow port ya service - sudo ufw allow port/service-name 
(like - sudo ufw allow ssh 
or 
sudo ufw allow 22
or 
sudo ufw allow from sourceip to any port 22) 
allow rule delete - sudo ufw delete allow port/service-name 
(like - sudo ufw delete allow ssh 
or 
sudo ufw delete allow 22
or
sudo ufw delete allow from sourceip to any port 22)