How to gather all the information to review if traffic is not being filtered in SDN Openshift Container Platform 4.

Issue

The OpenShift SDN uses OpenvSwitch, virtual extensible LAN (VXLAN) tunnels, OpenFlow rules, and iptables. The way the iptables proxy works is by querying iptables-save to gather all the current rules, it later verifies the current rules and then applies the change in a single transaction with iptables-apply.
The way the userspace proxy works is by running, for each rule, iptables -C to check if a rule exists, and iptables -A to create it or iptables -D to delete it if necessary. Doing multiple small iptables transactions is way slower than running a single large transaction.