the WLS instance uses Firewalld
Creating new rules with Firewalld:
systemctl restart firewalld
firewall-cmd –zone=public –list-all
Thus, the public zone now looks like:
# firewall-cmd –zone=public –list-all
services: dhcpv6-client ssh
Adding rules directly with iptables commands are not preserved by Firewalld – they need to be added to the Firewalld config. Seems to be ok now.