Run /sbin/chkconfig iptables off.
iptables is disable.
However, when the ssg service is started, it is enable.
After start ssg service, run iptables -L comannd:
result: Shown firewall rules.
That's because of the current specifications of API Gateway aplliance.
The necessary firewall rules are loaded when the SSG service starts up.
It is if even though iptables in chkconfig are invalid.
So, after activating SSG service, "iptables - L" command displays valid firewall rules.