I added this before *filter
in /etc/ufw/before.rules
. It redirects port 80 to 8080 and port 443 to 8081.
*nat
:PREROUTING ACCEPT [0:0]
-A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
COMMIT
*nat
:PREROUTING ACCEPT [0:0]
-A PREROUTING -p tcp --dport 443 -j REDIRECT --to-port 8081
COMMIT