AIX must not respond to ICMPv6 echo requests sent to a broadcast address.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-215430 | AIX7-00-003135 | SV-215430r991589_rule | CCI-000366 | medium |
| Description | ||||
| Responding to broadcast ICMP echo requests facilitates network mapping and provides a vector for amplification attacks. | ||||
| STIG | Date | |||
| IBM AIX 7.x Security Technical Implementation Guide | 2024-08-16 | |||
Details
Check Text (C-215430r991589_chk)
From the command prompt, run the following command:
# /usr/sbin/no -o bcastping
bcastping = 0
If the value returned is not "0", this is a finding.
Fix Text (F-16626r294742_fix)
Configure the system to not respond to IPv6 multicast ICMP ECHO_REQUESTs by running:
# /usr/sbin/no -p -o bcastping=0