Disabling the Firewall

To disable the firewall on each host in your cluster, perform the following steps on each host.

For iptables, save the existing rule set:
```
sudo iptables-save > ~/firewall.rules
```

Disable the firewall:

RHEL 7 compatible:

sudo systemctl disable firewalld
sudo systemctl stop firewalld

SLES:

sudo chkconfig SuSEfirewall2_setup off
sudo chkconfig SuSEfirewall2_init off
sudo rcSuSEfirewall2 stop