The AIX DHCP client must not send dynamic DNS updates.
Overview
| Finding ID |
Version |
Rule ID |
IA Controls |
Severity |
| V-215427 |
AIX7-00-003132 |
SV-215427r991589_rule |
|
Medium |
| Description |
| Dynamic DNS updates transmit unencrypted information about a system including its name and address and should not be used unless needed. |
Details
| Check Text (C-16625r294732_chk) |
If AIX does not use DHCP client, this is Not Applicable.
Determine if the system's DHCP client is configured to send dynamic DNS updates:
# grep "^updateDNS" /etc/dhcpc.opt /etc/dhcpcd.ini
If any lines are returned, this is a finding. |
| Fix Text (F-16623r294733_fix) |
Configure the system's DHCP client to not send dynamic DNS updates.
Remove or comment-out "updateDNS" lines from the "/etc/dhcpcd.ini" and "/etc/dhcpc.opt" files. |