The DECnet protocol must be disabled or not installed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-88561	VROM-SL-000630	SV-99211r1_rule		Medium

Description
The DECnet suite of protocols is no longer in common use. Binding this protocol to the network stack increases the attack surface of the host. Unprivileged local processes may be able to cause SLES for vRealize to dynamically load a protocol handler by opening a socket using the protocol.

STIG	Date
VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide	2018-10-11

Details

Check Text ( C-88253r1_chk )
Check that the "DECnet" protocol handler is prevented from dynamic loading: # grep "install decnet /bin/true" /etc/modprobe.conf /etc/modprobe.conf.local /etc/modprobe.d/* If no result is returned, this is a finding.

Fix Text (F-95303r1_fix)
Prevent the "DECnet" protocol handler from dynamic loading: # echo "install decnet /bin/true" >> /etc/modprobe.conf.local