STIGQter STIGQter: STIG Summary: VMware vSphere 7.0 vCenter Appliance Photon OS Security Technical Implementation Guide Version: 1 Release: 4 Benchmark Date: 30 Jan 2025:

The Photon operating system must configure sshd to disallow compression of the encrypted session stream.

DISA Rule

SV-256553r991589_rule

Vulnerability Number

V-256553

Group Title

SRG-OS-000480-GPOS-00227

Rule Version

PHTN-30-000084

Severity

CAT II

CCI(s)

Weight

10

Fix Recommendation

Navigate to and open:

/etc/ssh/sshd_config

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

Compression no

At the command line, run the following command:

# systemctl restart sshd.service

Check Contents

At the command line, run the following command:

# sshd -T|&grep -i Compression

Expected result:

Compression no

If the output does not match the expected result, this is a finding.

Vulnerability Number

V-256553

Documentable

False

Rule Version

PHTN-30-000084

Severity Override Guidance

At the command line, run the following command:

# sshd -T|&grep -i Compression

Expected result:

Compression no

If the output does not match the expected result, this is a finding.

Check Content Reference

M

Target Key

5520