connection timed out

Summary:

for a newly created instance I can see that curl private-ip:3000 is working but curl public-ip:3000 is giving a connection timed out error.

3000 is set in ingress rules.

I am using Ubuntu 22

Could it be that my Oracle Cloud Security List is likely blocking 3000.

Command: sudo netstat -tulnp | grep 3000

Output: tcp LISTEN 0 128 0.0.0.0:3000 0.0.0.0:* users:(("node",pid,fd))

Node.js is working proper.

Running server on port 80 also did not work.

Please suggest a work around