How do you relay HTTP Port 80 Connections to Tomcat Port 8080?

Question

I am working with a CentOS VPS and would like to achieve this without running tomcat as root.

Answer 1

you have two options:

• Put an apache or other webserver in front of the tomcat server and pass the requests to the tomcat. This post shows how.
• Using iptables redirects.

Nearly the same question is discussed here

Answer 2

for iptables redirect you can do like this :

iptables -t nat -A PREROUTING  -p tcp --dport 80 -j REDIRECT --to-port 8080

Answer 3

For CentOS 7, use this:

sudo firewall-cmd --zone=trusted --add-forward-port=port=80:proto=tcp:toport=8080 --permanent
sudo reboot