Copied to clipboard

firewalld

firewalld is a firewall solution on Linux operating system. It protects computers from unauthorized access and attacks by managing network ports and services.

Example

Enable support for IPv4 and IPv6:
```
# firewall-cmd --ipv4 --ipv6
```

Add specified service to specified zone:

# firewall-cmd --add-service=http --zone=public

Add specified port/protocol to specified zone:

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

List all firewall rules:
```
# firewall-cmd --list-all
```
Get default zone:
```
# firewall-cmd --get-default-zone
```
Reload firewall rules:
```
# firewall-cmd --reload
```