The Code must do the talking.

Calling nodeJS APPs via IP:Port stopped working after Ubuntu Upgrade

8. August 2018

After i upgraded my server to Ubuntu 18.04 and installed iRedMail suddenly all my nodejs scripts that were listening to a port with http server were no longer accessable by calling them directly with the ip and port (for example They were just loading forever until the browser terminated the request due to timeout.

I did not find anything about that problem and had not much experience on firewalls and ports and that stuff, but after a lot of research and trial and error the solution was quite simple: you now have to open the port with iptables like this:

iptables -A INPUT -p tcp --dport 8080 -j ACCEPT

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