The DECnet protocol must be disabled or not installed.

From VMware vRealize Operations Manager 6.x SLES Security Technical Implementation Guide

Associated with: CCI-000382

SV-99211r1_rule The DECnet protocol must be disabled or not installed.

Vulnerability discussion

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.

Check content

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

Prevent the "DECnet" protocol handler from dynamic loading: # echo "install decnet /bin/true" >> /etc/modprobe.conf.local

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