The Tanium Operating System (TanOS) must protect against or limit the effects of denial of service (DoS) attacks by employing organization-defined security safeguards.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-254870	TANS-OS-001420	SV-254870r866151_rule		Medium

Description
DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. This requirement addresses the configuration of the operating system to mitigate the impact of DoS attacks that have occurred or are ongoing on system availability. For each system, known and potential DoS attacks must be identified and solutions for each type implemented. A variety of technologies exist to limit or, in some cases, eliminate the effects of DoS attacks (e.g., limiting processes or establishing memory partitions). Employing increased capacity and bandwidth, combined with service redundancy, may reduce the susceptibility to some DoS attacks.

Description

DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity. This requirement addresses the configuration of the operating system to mitigate the impact of DoS attacks that have occurred or are ongoing on system availability. For each system, known and potential DoS attacks must be identified and solutions for each type implemented. A variety of technologies exist to limit or, in some cases, eliminate the effects of DoS attacks (e.g., limiting processes or establishing memory partitions). Employing increased capacity and bandwidth, combined with service redundancy, may reduce the susceptibility to some DoS attacks.

STIG	Date
Tanium 7.x Operating System on TanOS Security Technical Implementation Guide	2022-10-31

Details

Check Text ( C-58483r866149_chk )
1. Sign in to the TanOS console as a user with the tanadmin role. 2. Enter "A" to go to the "Appliance Configuration" menu. 3. Enter "A" to go to the "Security" menu. 4. Enter "X" to go to the "Advanced Security" menu. 5. If you see "DOS protection: disabled" in the middle of the screen, this is a finding.

Fix Text (F-58427r866150_fix)
1. Sign in to the TanOS console as a user with the tanadmin role. 2. Enter "A" to go to the "Appliance Configuration" menu. 3. Enter "A" to go to the "Security" menu. 4. Enter "X" to go to the "Advanced Security" menu. 5. Enter "6" to enable DoS protection. The screen updates with an enabled status.