The Photon operating system must configure Secure Shell (SSH) to restrict LoginGraceTime.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-258884	PHTN-40-000221	SV-258884r933713_rule		Medium

Description
By default, SSH unauthenticated connections are left open for two minutes before being closed. This setting is too permissive as no legitimate login would need such an amount of time to complete a login. Quickly terminating idle or incomplete login attempts will free up resources and reduce the exposure any partial logon attempts may create.

STIG	Date
VMware vSphere 8.0 vCenter Appliance Photon OS 4.0 Security Technical Implementation Guide	2023-10-29

Details

Check Text ( C-62624r933711_chk )
At the command line, run the following command to verify the running configuration of sshd: # sshd -T|&grep -i LoginGraceTime Example result: logingracetime 30 If "LoginGraceTime" is not set to "30", this is a finding.

Fix Text (F-62533r933712_fix)
Navigate to and open: /etc/ssh/sshd_config Ensure the "LoginGraceTime" line is uncommented and set to the following: LoginGraceTime 30 At the command line, run the following command: # systemctl restart sshd.service