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How to Open Port 80 & 443 in FirewallD

 How to Open Port 80 & 443 in FirewallD


FirewallD is the frontend management solution of iptables for most of the Linux distributions. It provides an easy-to-use command line and GUI-based interface to manage iptable rules. This tutorial describes to you to open port 80 (HTTP) and port 443 (HTTPS) in FirewallD.


Allow Port 80 & 443 in FirewallD

Using firewalld, you can allow/deny any port temporarily or permanently. The temporary allow/deny rules will be removed after the system reboot. But the permanent rules will persist even after the system restart.
The following commands allow incoming traffic on TCP ports 80 and 443 in firewalld.


sudo firewall-cmd --zone=public --add-port=80/tcp 

sudo firewall-cmd --zone=public --add-port=443/tcp 


The --permanent option insures to remain firewall rules after system reboots.


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

sudo firewall-cmd --permanent --zone=public --add-port=443/tcp 


Next, apply the changes by reloading the firewallD.


sudo firewall-cmd --reload 


View Firewall Rules


After adding the rules in firewalld, You can verify the by the running following command.


sudo firewall-cmd --permanent --zone=public --list-ports 

Output:

443/tcp 80/tcp


Remove Rules from FirewallD


If you don’t need to keep the ports open, you can remove/deny the above ports from the firewalld using the –remove-port option:


sudo firewall-cmd --permanent --zone=public --remove-port=80/tcp 

sudo firewall-cmd --permanent --zone=public --remove-port=443/tcp 


Next, run the following command to apply the changes:


sudo firewall-cmd --reload 


Source

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