Check: GEN007850
AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE:
GEN007850
(in versions v1 r14 through v1 r10)
Title
The DHCP client must not send dynamic DNS updates. (Cat II impact)
Discussion
Dynamic DNS updates transmit unencrypted information about a system including its name and address and should not be used unless needed.
Check Content
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
Configure the system's DHCP client to not send dynamic DNS updates. Remove / comment updateDNS lines from the /etc/dhcpcd.ini and /etc/dhcpc.opt files.
Additional Identifiers
Rule ID: SV-38963r1_rule
Vulnerability ID: V-22549
Group Title: GEN007850
Expert Comments
Expert comments are only available to logged-in users.
CCIs
CCIs tied to check.
| Number | Definition |
|---|---|
| CCI-000366 |
The organization implements the security configuration settings. |
Controls
Controls tied to check. These are derived from the CCIs shown above.
| Number | Title |
|---|---|
| CM-6 |
Configuration Settings |