Title

The ntalk daemon must be disabled on AIX. (Cat I impact)

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

Additional Identifiers

Rule ID: SV-215375r508663_rule

Vulnerability ID: V-215375

Group Title: SRG-OS-000095-GPOS-00049

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.