I recently installed a JEE application and wanted it to run on port 80 to simplify the URL. For security reasons I didn't want the process to run as root. When I tried to change the application servers config to attempt to bind port 80 I would receive this error:
Non root user cannot bind to port 80
After doing some research, I finally found the solution I decided to move forward with on Server Fault.
This allowed me to use iptables to redirect port 80 requests to port 8080:
iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
Now I'm a happy admin as I get the security of not running the process as root and the pretty URL that doesn't require specifying the port!
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