The Photon operating system must configure sshd to restrict AllowTcpForwarding.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-256587 | PHTN-30-000119 | SV-256587r991589_rule | CCI-000366 | medium |
| Description | ||||
| While enabling Transmission Control Protocol (TCP) tunnels is a valuable function of sshd, this feature is not appropriate for use on single-purpose appliances. | ||||
| STIG | Date | |||
| VMware vSphere 7.0 vCenter Appliance Photon OS Security Technical Implementation Guide | 2024-12-16 | |||
Details
Check Text (C-256587r991589_chk)
At the command line, run the following command:
# sshd -T|&grep -i AllowTcpForwarding
Expected result:
allowtcpforwarding no
If the output does not match the expected result, this is a finding.
Fix Text (F-60205r887434_fix)
Navigate to and open:
/etc/ssh/sshd_config
Ensure the "AllowTcpForwarding" line is uncommented and set to the following:
AllowTcpForwarding no
At the command line, run the following command:
# systemctl restart sshd.service