Question

Couldn't fetch api while firewall is enabled.

Hello.

I have a website on digitalocean and I just followed the tutorial down below so i got my certificate and now my website uses https protocol. https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-20-04

Everything is good to this point.

But there is a but. :)

I’m using node.js on my website. It connects to my mongoDB cluster and it creates an api url based on my domainname or/and droplet IP address.

For example my API_URL is: 123.45.67.89:5000/items I fetch that URL and do somethings on my website based on items.

But as i followed https protocol tutorial, i just enabled my firewall and because of that i guess, firewall is blocking my API URL and i get error on fetch.

I also can’t reach that API_URL(123.45.67.89:5000/items) manually.

While firewall is closed i can fetch my api.

What should i do?

Thanks. Regards.

Subscribe
Share

Submit an answer
You can type!ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Hi, Since you followed the tutorial, I guess you configured firewall rules using ufw management tool. If I am right, list the rules and check if communication is allowed on port TCP 5000

sudo ufw status verbose

If it is not allowed, you can allow it adding a rule:

sudo ufw allow 5000/tcp

Here is the tutorial on configuring firewall with ufw management tool: https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-with-ufw-on-ubuntu-20-04