There are two methods that can be used to protect the listener using COST "SECURE_REGISTER_listener_name =" in stand alone database installations.
1) Restricting registration to the TCP protocol (Requires the fix for BUG:12880299)
- or -
2) Restricting registration to the IPC protocol (The patch for BUG:12880299 is NOT required for the IPC method)
Either method accomplishes the same goal but it is your choice which type to implement subject to the restriction* noted below. Both methods will be discussed.
* The second method (using IPC) cannot be used if the database is a member of an Oracle Data Guard broker configuration.