The ntalk daemon must be disabled on AIX.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-215375 | AIX7-00-003070 | SV-215375r508663_rule | High |
| Description |
|---|
| This service establishes a two-way communication link between two users, either locally or remotely. Unless required the ntalk service will be disabled to prevent attacks. |
| STIG | Date |
|---|---|
| IBM AIX 7.x Security Technical Implementation Guide | 2022-06-06 |
Details
| Check Text ( C-16573r294576_chk ) |
|---|
| From the command prompt, execute the following command: # grep "^ntalk[[:blank:]]" /etc/inetd.conf If there is any output from the command, this is a finding. |
| Fix Text (F-16571r294577_fix) |
|---|
| In "/etc/inetd.conf", comment out the "ntalk" entry by running command: # chsubserver -r inetd -C /etc/inetd.conf -d -v 'ntalk' -p 'udp' Restart inetd: # refresh -s inetd |