IP forwarding for IPv4 must not be enabled on AIX unless the system is a router.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-215263 | AIX7-00-002064 | SV-215263r991589_rule | CCI-000366 | medium |
| Description | ||||
| IP forwarding permits the kernel to forward packets from one network interface to another. The ability to forward packets between two networks is only appropriate for systems acting as routers. | ||||
| STIG | Date | |||
| IBM AIX 7.x Security Technical Implementation Guide | 2024-08-16 | |||
Details
Check Text (C-215263r991589_chk)
From the command prompt, run the following command:
# no -o ipforwarding
ipforwarding = 0
If the value returned is not "0", this is a finding.
Fix Text (F-16459r294241_fix)
Disable IPv4 forwarding on the system by running command:
# no -p -o ipforwarding=0