AIX must not have IP forwarding for IPv6 enabled unless the system is an IPv6 router.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-215265	AIX7-00-002066	SV-215265r991589_rule		Medium

Description

If the system is configured for IP forwarding and is not a designated router, it could be used to bypass network security by providing a path for communication not filtered by network devices.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2024-08-16

Details

Check Text (C-16463r294246_chk)

From the command prompt, run the following command:

# /usr/sbin/no -o ip6forwarding
ip6forwarding = 0

If the value returned is not "0", this is a finding.

Fix Text (F-16461r294247_fix)

Disable IPv6 forwarding on the system:
# /usr/sbin/no -p -o ip6forwarding=0