80,443 ports are not worked in linux machine

Question

I am new to azure and I created a Redhat Linux machine and I installed tomcat on it. I changed port from 8080 to 80, tomcat is working fine and I changed port perfectly. I enabled ports 22,80,443 in NSG, except 22 other ports are not working. I don't know what the reason is.

This is my NSG setup

When I am searching in google I'll get this output:

when i used this command I'll get this output:

tcp 0 0 0.0.0.0:5355 0.0.0.0:* LISTEN 905/systemd-resolve
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1845/sshd
tcp6 0 0 :::5355 :::* LISTEN 905/systemd-resolve
tcp6 0 0 :::22 :::* LISTEN 1845/sshd

please anyone helps me regarding this issue.
Thanks in advance.

Answer 1

I guess, the local firewall ports are blocking for a public access.
I assume that you are using RHEL 7 or above
Check, if the firewall is active by the command: firewall-cmd --state
To add the port 80 in exclusion list, you may use the commands:

sudo firewall-cmd --zone=public --add-port=80/tcp --permanent  
sudo firewall-cmd --reload  
firewall-cmd --list-all   

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