The tftp daemon must be disabled on AIX.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-215386 | SRG-OS-000095-GPOS-00049 | AIX7-00-003081 | SV-215386r958478_rule | 2026-02-06 | 3 |
Description
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.
ℹ️ Check
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
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