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V-215386

CAT II (Medium)

The tftp daemon must be disabled on AIX.

Rule ID

SV-215386r958478_rule

STIG

IBM AIX 7.x Security Technical Implementation Guide

Version

V3R2

CCIs

CCI-000381

Discussion

The tftp service allows remote systems to download or upload files to the tftp server without any authentication. It is therefore a service that should not run, unless needed. One of the main reasons for requiring this service to be activated is if the host is a NIM master. However, the service can be enabled and then disabled once a NIM operation has completed, rather than left running permanently.

Check Content

From the command prompt, execute the following command: 
# grep "^tftp[[: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 "tftp" entry by running command: 
# chsubserver -r inetd -C /etc/inetd.conf -d -v 'tftp' -p 'udp'

Restart inetd:
# refresh -s inetd