The Photon operating system must configure Secure Shell (SSH) to restrict AllowTcpForwarding.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258883 | PHTN-40-000220 | SV-258883r933710_rule | CCI-000366 | medium |
| Description | ||||
| While enabling TCP tunnels is a valuable function of sshd, this feature is not appropriate for use on single purpose appliances. | ||||
| STIG | Date | |||
| VMware vSphere 8.0 vCenter Appliance Photon OS 4.0 Security Technical Implementation Guide | 2023-10-29 | |||
Details
Check Text (C-258883r933710_chk)
At the command line, run the following command to verify the running configuration of sshd:
# sshd -T|&grep -i AllowTcpForwarding
Example result:
allowtcpforwarding no
If "AllowTcpForwarding" is not set to "no", this is a finding.
Fix Text (F-62532r933709_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