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The Photon operating system must configure Secure Shell (SSH) to disallow Generic Security Service Application Program Interface (GSSAPI) authentication.


Finding ID Version Rule ID IA Controls Severity
V-258874 PHTN-40-000211 SV-258874r933683_rule Medium
GSSAPI authentication is used to provide additional authentication mechanisms to applications. Allowing GSSAPI authentication through Secure Shell (SSH) exposes the system's GSSAPI to remote hosts, increasing the attack surface of the system.
VMware vSphere 8.0 vCenter Appliance Photon OS 4.0 Security Technical Implementation Guide 2023-10-29


Check Text ( C-62614r933681_chk )
At the command line, run the following command to verify the running configuration of sshd:

# sshd -T|&grep -i GSSAPIAuthentication

Example result:

gssapiauthentication no

If "GSSAPIAuthentication" is not set to "no", this is a finding.
Fix Text (F-62523r933682_fix)
Navigate to and open:


Ensure the "GSSAPIAuthentication" line is uncommented and set to the following:

GSSAPIAuthentication no

At the command line, run the following command:

# systemctl restart sshd.service