The Reliable Datagram Sockets (RDS) protocol must be disabled unless required.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-208868	OL6-00-000126	SV-208868r793653_rule		Low

Description
Disabling RDS protects the system against exploitation of any flaws in its implementation.

STIG	Date
Oracle Linux 6 Security Technical Implementation Guide	2021-12-03

Details

Check Text ( C-9121r357584_chk )
If the system is configured to prevent the loading of the "rds" kernel module, it will contain lines inside any file in "/etc/modprobe.d" or the deprecated"/etc/modprobe.conf". These lines instruct the module-loading system to run another program (such as "/bin/true") upon a module "install" event. Run the following command to search for such lines in all files in "/etc/modprobe.d" and the deprecated "/etc/modprobe.conf": $ grep -r rds /etc/modprobe.conf /etc/modprobe.d If no line is returned, this is a finding. This is not a finding if the RDS service is required for proper system or application operation. Oracle Engineered Systems such as Exadata use the RDS service for InfiniBand-based communication with storage services.

Check Text ( C-9121r357584_chk )

If the system is configured to prevent the loading of the "rds" kernel module, it will contain lines inside any file in "/etc/modprobe.d" or the deprecated"/etc/modprobe.conf". These lines instruct the module-loading system to run another program (such as "/bin/true") upon a module "install" event. Run the following command to search for such lines in all files in "/etc/modprobe.d" and the deprecated "/etc/modprobe.conf":

$ grep -r rds /etc/modprobe.conf /etc/modprobe.d

If no line is returned, this is a finding.

This is not a finding if the RDS service is required for proper system or application operation. Oracle Engineered Systems such as Exadata use the RDS service for InfiniBand-based communication with storage services.

Fix Text (F-9121r357585_fix)
The Reliable Datagram Sockets (RDS) protocol is a transport layer protocol designed to provide reliable high- bandwidth, low-latency communications between nodes in a cluster. To configure the system to prevent the "rds" kernel module from being loaded, add the following line to a file in the directory "/etc/modprobe.d": install rds /bin/true