I’ve created a Ubuntu NodeJS 8.10.0 on 18.04 droplet.
I’ve deployed a Node.js app, tested on my computer.
I can reach my app from inside the Droplet.
I can’t reach my app from my computer.
This is not the real IP.
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I would bet that your application is listening on 127.0.0.1, as opposed to the public interface. If you run
netstat -tulpnyou should see the applications listening, and it might look something like this:
Notice on my system that systemd-resolve is listening on 127.0.0.1, so it is only reachable internally. Meanwhile, sshd is listening on 0.0.0.0 which means all interfaces, making it accessible both internally and externally.
Your application most likely defines this somewhere in it’s configuration, and can be adjusted. If you’re not sure where, maybe a grep through it’s code can help, something like:
If it isn’t configured anywhere, it’s probably an assumed default and it is required that you specifically define the value to change it.
iptables -I INPUT -p tcp --dport 3000 -j ACCEPT
worked for me, thanks in milllions
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