https://www.ateam-oracle.com/post/oci-network-firewall—concepts-and-deployment
https://www.ateam-oracle.com/post/oci-network-firewall—hub-and-spoke-traffic-inspection
https://www.ateam-oracle.com/post/url-filtering-using-oci-network-firewall
https://blogs.oracle.com/cloudsecurity/post/defense-in-depth-layering-using-oci-network-firewall
https://docs.oracle.com/en-us/iaas/Content/network-firewall/security-rule-create.htm
https://docs.oracle.com/en/learn/oci-network-firewall-lb/index.html#introduction
https://docs.oracle.com/en-us/iaas/Content/Network/Tasks/scenario_g.htm
https://docs.oracle.com/en-us/iaas/Content/network-firewall/network-firewall-routing-traffic.htm
