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The talk daemon must be disabled on AIX.


Overview

Finding ID Version Rule ID IA Controls Severity
V-91377 AIX7-00-003069 SV-101475r1_rule Medium
Description
This talk service is used to establish an interactive two-way communication link between two UNIX users. Unless required the talk service will be disabled to prevent attacks.
STIG Date
IBM AIX 7.x Security Technical Implementation Guide 2020-02-24

Details

Check Text ( C-90531r1_chk )
From the command prompt, execute the following command:
# grep "^talk[[:blank:]]" /etc/inetd.conf

If there is any output from the command, this is a finding.
Fix Text (F-97575r1_fix)
In "/etc/inetd.conf", comment out the "talkd" entry by running command:
# chsubserver -r inetd -C /etc/inetd.conf -d -v 'talk' -p 'udp'

Restart inetd:
# refresh -s inetd