The Tanium Operating System (TanOS) must manage excess capacity, bandwidth, or other redundancy to limit the effects of information flooding types of denial-of-service (DoS) attacks.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-254851	SRG-OS-000142	TANS-OS-000455	SV-254851r1067742_rule	2025-02-11	2

Description
DoS is a condition that occurs 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. Managing excess capacity ensures sufficient capacity is available to counter flooding attacks. Employing increased capacity and service redundancy may reduce the susceptibility to some DoS attacks. Managing excess capacity may include, for example, establishing selected usage priorities, quotas, or partitioning.

Description

DoS is a condition that occurs 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. Managing excess capacity ensures sufficient capacity is available to counter flooding attacks. Employing increased capacity and service redundancy may reduce the susceptibility to some DoS attacks. Managing excess capacity may include, for example, establishing selected usage priorities, quotas, or partitioning.

ℹ️ Check
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
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.