5. Using Security Lists to Configure Firewalls

Compute Instance will configure incoming and outgoing firewall policies through Security Lists. Security Lists are properties connected to the subnet to which the Compute Instance belongs. If you change the Security Lists, it will be applied to all instances in the subnet. You can also assign more than one security list to a subnet by changing the security list on the subnet or defining a firewall policy in a separate security list.

Each Compute Instance’s firewall uses the OS’s own firewall capabilities.

• Step #1: Install target application
• Step #2: Set Exception Port on OS Firewall
• Step #3: Register on OCI Security List