STIGQter: STIG Summary: Microsoft Windows Server 2025 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 01 Jul 2026:

Windows Server 2025 OpenSSH must be configured so that all network connections associated with SSH traffic are terminated after 10 minutes of becoming unresponsive.

DISA Rule

SV-285319r1212174_rule

Vulnerability Number

V-285319

Group Title

SRG-OS-000126-GPOS-00066

Rule Version

WN25-SH-000070

Severity

CAT II

CCI(s)

• CCI-001133 - Terminate the network connection associated with a communications session at the end of the session or after an organization-defined time period of inactivity.
• CCI-002361 - Automatically terminate a user session after organization-defined conditions or trigger events requiring session disconnect.
• CCI-002891 - Verify session and network connection termination after the completion of nonlocal maintenance and diagnostic sessions.

Weight

10

Fix Recommendation

To configure the system, add or modify the following line in the "$env:ProgramData/ssh/sshd_config" file.

ClientAliveInterval 600

Restart the OpenSSH service for the settings to take effect.

Check Contents

If OpenSSH is not installed on the system, this requirement is not applicable.

Verify the "ClientAliveInterval" variable is set to a value of "600" or less by performing the following command:

C:\ > Get-Content "$env:ProgramData\ssh\sshd_config" | Select-String -Pattern '^\s*ClientAliveInterval'

ClientAliveInterval 600

If "ClientAliveInterval" does not exist, does not have a value of "600" or less, or is commented out, this is a finding.

Vulnerability Number

V-285319

Documentable

False

Rule Version

WN25-SH-000070

Severity Override Guidance

If OpenSSH is not installed on the system, this requirement is not applicable.

Verify the "ClientAliveInterval" variable is set to a value of "600" or less by performing the following command:

C:\ > Get-Content "$env:ProgramData\ssh\sshd_config" | Select-String -Pattern '^\s*ClientAliveInterval'

ClientAliveInterval 600

If "ClientAliveInterval" does not exist, does not have a value of "600" or less, or is commented out, this is a finding.

Check Content Reference

M

Target Key

5719