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V-215334

CAT I (High)

AIX must disable trivial file transfer protocol.

Rule ID

SV-215334r1009554_rule

STIG

IBM AIX 7.x Security Technical Implementation Guide

Version

V3R2

CCIs

CCI-003938CCI-001814

Discussion

Without auditing the enforcement of access restrictions against changes to the application configuration, it will be difficult to identify attempted attacks and an audit trail will not be available for forensic investigation for after-the-fact actions. Enforcement actions are the methods or mechanisms used to prevent unauthorized changes to configuration settings. Enforcement action methods may be as simple as denying access to a file based on the application of file permissions (access restriction). Audit items may consist of lists of actions blocked by access restrictions or changes identified after the fact.

Check Content

From the command prompt, execute the following command: 
# grep "^tftp[[:blank:]]" /etc/inetd.conf

If there is any output from the command, it is a finding.

Fix Text

In "/etc/inetd.conf", comment out the "tftp" entry: 
# chsubserver -r inetd -C /etc/inetd.conf -d -v 'tftp' -p 'udp'

Restart inetd:
# refresh -s inetd