The Reliable Datagram Sockets (RDS) protocol must be disabled or not installed unless required.

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Part of GEN007480

Associated with IA controls: ECSC-1

Associated with: CCI-000382

SV-37603r1_rule The Reliable Datagram Sockets (RDS) protocol must be disabled or not installed unless required.

Vulnerability discussion

The RDS protocol is a relatively new protocol developed by Oracle for communication between the nodes of a cluster. Binding this protocol to the network stack increases the attack surface of the host. Unprivileged local processes may be able to cause the system to dynamically load a protocol handler by opening a socket using the protocol.

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Fix text

Prevent the RDS protocol handler for dynamic loading. # echo "install rds /bin/true" >> /etc/modprobe.conf

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