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AWS EC2 Connection refused for http port 80 for tomcat server

+1 vote
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I had installed tomcat 8 port 80 on Amazon AWS EC2, but netstat, fuser does show me tomcat on port 80. Browser gives 404 error and connection refused. I wrote to Amazon support for the misery...

posted Mar 6, 2018 by Priya Ranjan Kumar

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Often if you are running Tomcat on port 80, you are proxying through a web server (Apache, nginx, etc.). It may be that your webserver failed, so crosscheck...
commented Mar 7, 2018 by Salil Agrawal
The issue was that in order to run Tomcat on a port below 1024 in Ubuntu/Unix, the service needs root privileges which is generally not recommended as running a process on port 80 with root privileges is an unnecessary security risk.

Solution is to use a port redirection via iptables :-

iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 8080

And it worked for me.
commented Mar 7, 2018 by Priya Ranjan Kumar

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