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.
Environment
API Gateway aplliance
Resolution
That's because of the current specifications of API Gateway aplliance.
Current specifications: 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.