Verify firewall settings
After you have restarted the firewall, you can verify your settings by listing them with the firewall-cmd command.
Procedure
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To verify rules added in the default public zone, such as ports-related rules, run the following command:
$ sudo firewall-cmd --list-all -
To verify rules added in the trusted zone, such as IP-range related rules, run the following command:
$ sudo firewall-cmd --zone=trusted --list-all