Control Center not able to access outside the linux (RHEL) box

I have installed Confluent Platform on my linux (RHEL) machine. I am able to create topics, publish and subscribe data from Kafka topic.
As its Linux machine, I cannot access the Control Center on same machine. I tried accessing the URL http://machine ip address:9021 (http://10.66.16.10:9021) from different machine which is in the same network. Its not working. Giving me error : This site cannot be reached.
My control-center.properties & control-center-dev.properties file/s are default. No changes made in these config files.

Please help/suggest.

hey @SandeepMali
did you check the log files?
curl localhost:9021 works fine?

best,
michael

Thanks Michael.
I checked the control center logs folder but its empty.
I ran the curl localhost:9021. attached is the details. I did get some HTML response but I did not understand.

Sandeep

ok looks correct to me.

as it’s a linux machine:
did you check whether there is a firewall running?

best,
michael

Sorry for the late reply. Yes. There is a firewall running on linux machine.
Do we need to change or open any port in any of the configuration file?? Please suggest. Thanks for your help…

-Sandeep

yep open at least port 9021 for incoming connections
to test I would shortly stop firewalld and then test the url again