The Photon operating system must configure Secure Shell (SSH) to restrict LoginGraceTime.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-258884 | SRG-OS-000480-GPOS-00227 | PHTN-40-000221 | SV-258884r991589_rule | 2024-07-11 | 2 |
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.
ℹ️ Check
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
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