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The DHCP client must not send dynamic DNS updates.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22549 | GEN007850 | SV-26933r2_rule | ECSC-1 | Medium |
| Description |
|---|
| Dynamic DNS updates transmit unencrypted information about a system including its name and address and should not be used unless needed. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2015-09-03 |
Details
| Check Text ( None ) |
|---|
| None |
| Fix Text (F-24178r1_fix) |
|---|
| Edit or add the "/etc/dhclient.conf" file and add or edit the "do-forward-updates" setting to false. Procedure: # echo "do-forward-updates false;" >> /etc/dhclient.conf |