The Photon operating system must configure sshd to disconnect idle Secure Shell (SSH) sessions.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-256514 | PHTN-30-000038 | SV-256514r970703_rule | CCI-001133 | medium |
| Description | ||||
| Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on a console or console port that has been left unattended. | ||||
| STIG | Date | |||
| VMware vSphere 7.0 vCenter Appliance Photon OS Security Technical Implementation Guide | 2024-12-16 | |||
Related Frameworks
3 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
SC-10
1.00
- DISA · V1R4 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1711 mapping
3.13.9
1.00
- DISA · V1R4 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-001133
1.00
- DISA · V1R4 · disa_xccdf · related
Details
Check Text (C-256514r970703_chk)
At the command line, run the following command:
# sshd -T|&grep -i ClientAliveCountMax
Expected result:
ClientAliveCountMax 0
If the output does not match the expected result, this is a finding.
Fix Text (F-60132r887215_fix)
Navigate to and open:
/etc/ssh/sshd_config
Ensure the "ClientAliveCountMax" line is uncommented and set to the following:
ClientAliveCountMax 0
At the command line, run the following command:
# systemctl restart sshd.service