Firewalld is the default firewall on CentOS 7 and 8. It is a dynamic firewall that uses zones to define the trust level of network connections or interfaces.
Firewalld provides a number of features, including:
- Allow or deny incoming and outgoing traffic
- Create firewall zones
- Define firewall rules
- Manage firewall services
- Enable or disable firewalld
- Start, Status and Stop Firewall
Install firewall in Linux Server (RedHAT/ Centos)
sudo yum install firewalld –y
[root@qp ~]# sudo yum install firewalld –y
Enable
Sudo systemctl enable firewalld
Start
Sudo systemctl start firewalld
Status
[root@qp ~]# sudo systemctl status firewalld
