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AIX must not respond to ICMPv6 echo requests sent to a broadcast address.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-91721 | AIX7-00-003135 | SV-101819r1_rule | 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 | 2020-02-24 |
Details
| Check Text ( C-90875r1_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-97919r1_fix) |
|---|
| Configure the system to not respond to IPv6 multicast ICMP ECHO_REQUESTs by running: # /usr/sbin/no -p -o bcastping=0 |