On machines running Debian or Ubuntu:

• cp /opt/enswitch/current/etc/init.d/debian/iptables /etc/init.d/iptables
• # Edit /etc/init.d/iptables and add a line allowing traffic from all other machines in the cluster.
• update-rc.d iptables remove
• cp /opt/enswitch/current/etc/systemd/debian/iptables.service /etc/systemd/system/iptables.service
• systemctl daemon-reload
• systemctl enable iptables.service
• systemctl start iptables.service

CentOS or Rocky Linux:

• systemctl stop firewalld
• systemctl mask firewalld
• dnf install -y iptables-services

If the file /etc/sysconfig/iptables exists, then edit it using /opt/enswitch/install/etc/sysconfig/iptables as a guideline. Otherwise do:

• ln -s /opt/enswitch/install/etc/sysconfig/iptables /etc/sysconfig/iptables

Edit /etc/sysconfig/iptables and add a line allowing traffic from all other machines in the cluster, then do:

• systemctl enable iptables.service
• systemctl start iptables.service

On machines running Redhat Enterprise or Fedora:

• cp /opt/enswitch/current/install/etc/sysconfig/iptables /etc/sysconfig/iptables
• # Edit /etc/sysconfig/iptables and add a line allowing traffic from all other machines in the cluster.
• chkconfig iptables on
• service iptables restart