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The ndpd-router must be disabled on AIX.


Overview

Finding ID Version Rule ID IA Controls Severity
V-215368 AIX7-00-003063 SV-215368r508663_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 2021-06-16

Details

Check Text ( C-16566r294555_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-16564r294556_fix)
In "/etc/rc.tcpip", comment out the "ndpd-router" entry by running command:
# chrctcp -d ndpd-router