The ndpd-router must be disabled on AIX.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-91365	AIX7-00-003063	SV-101463r1_rule		Medium

Description
This manages the Neighbor Discovery Protocol (NDP) for non-kernel activities, required in IPv6. The ndpd-router manages NDP for non-kernel activities. Unless the server utilizes IPv6, this is not required and should be disabled to prevent attacks.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2020-02-24

Details

Check Text ( C-90519r1_chk )
From the command prompt, execute the following command: # grep "^start[[:blank:]]/usr/sbin/ndpd-router" /etc/rc.tcpip If there is any output from the command, this is a finding.

Fix Text (F-97563r1_fix)
In "/etc/rc.tcpip", comment out the "ndpd-router" entry by running command: # chrctcp -d ndpd-router