3.5.3 Ensure RDS is disabled (Not Scored)

Level 1 - Server
Level 1 - Workstation 

The Reliable Datagram Sockets (RDS) protocol is a transport layer protocol designed to provide low-latency, high-bandwidth communications between cluster nodes. It was developed by the Oracle Corporation.

If the protocol is not being used, it is recommended that kernel module not be loaded, disabling the service to reduce the potential attack surface.

Run the following commands and verify the output is as indicated:

# modprobe -n -v rds
install /bin/true 
# lsmod | grep rds
<No output>

Edit or create the file /etc/modprobe.d/CIS.conf and add the following line:

install rds /bin/true