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V-215375

CAT I (High)

The ntalk daemon must be disabled on AIX.

Rule ID

SV-215375r958478_rule

STIG

IBM AIX 7.x Security Technical Implementation Guide

Version

V3R2

CCIs

CCI-000381

Discussion

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.

Check Content

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

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