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The Internetwork Packet Exchange (IPX) protocol must be disabled or not installed.


Finding ID Version Rule ID IA Controls Severity
V-89675 VRAU-SL-000640 SV-100325r1_rule Medium
The Internetwork Packet Exchange (IPX) protocol is a network-layer protocol that 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 the system to dynamically load a protocol handler by opening a socket using the protocol.
VMware vRealize Automation 7.x SLES Security Technical Implementation Guide 2018-10-12


Check Text ( C-89367r1_chk )
Check that the IPX protocol handler is prevented from dynamic loading:

# grep "install ipx /bin/true" /etc/modprobe.conf /etc/modprobe.conf.local /etc/modprobe.d/*

If no result is returned, this is a finding.
Fix Text (F-96417r1_fix)
Prevent the IPX protocol handler for dynamic loading:

# echo "install ipx /bin/true" >> /etc/modprobe.conf.local