Use ip tables to redirect ports on a server. This is useful if applications cannot use reserved ports.
Required packages:
iptables - contains utilities for manipulating ip routing tables
iptables-persistent - to ensure that the rules are preserved across server re-boots
#iptables -A PREROUTING -t nat -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 8080 iptables -A PREROUTING -t nat -p tcp -m tcp --dport 443 -j REDIRECT --to-ports 8443
iptables-save > /etc/iptables/rules.v4
iptables-restore < /etc/iptables/rules.v4