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AIX telnet daemon must not be running.


Overview

Finding ID Version Rule ID IA Controls Severity
V-91305 AIX7-00-002059 SV-101403r1_rule High
Description
This telnet service is used to service remote user connections. This is historically the most commonly used remote access method for UNIX servers. The username and passwords are passed over the network in clear text and therefore insecurely. Unless required the telnetd daemon will be disabled. This function, if required, should be facilitated through SSH.
STIG Date
IBM AIX 7.x Security Technical Implementation Guide 2019-04-29

Details

Check Text ( C-90459r1_chk )
Determine if the "telnet" daemon is running by running the following command:
# grep -v '^#' /etc/inetd.conf | grep telnet

If an entry is returned, this is a finding.
Fix Text (F-97503r1_fix)
Disable the "telnet" entry in "/etc/inetd.conf" using command:
# chsubserver -r inetd -C /etc/inetd.conf -d -v 'telnet' -p 'tcp6'

Reload the inetd process:
# refresh -s inetd