I want to remove the psa-firewall and use iptables within the OS. I am trying to get the Plesk server to meet PCI standards and am thinking that using iptables within the Redhat OS will allow me to block any and all ports I don't want advertised. I do not seem to be able to block 8443 using the Plesk firewall. I would like to block 8443 except for certain IP addresses. I need to make sure that I can remove psa-firewall and then start iptables service. right now, I am not able to start iptables - even with psa-firewall shut down. Please advise. Thank you.