Il mio firewall è attualmente inattivo.
systemctl status firewalld firewalld.service Loaded: masked (/dev/null) Active: inactive (dead)
Ho usato il seguente comando per abilitare il firewall
# systemctl unmask firewalld
ma ho ricevuto questo errore:
# systemctl unmask firewalld
Failed to issue method call: Access denied
# sudo systemctl restart firewalld
Failed to issue method call: Unit firewalld.service failed to load: No such file or directory.
# sudo systemctl enable firewalld
Failed to issue method call: Access denied
lsmod | grep iptab
mostrano moduli caricati?