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V-256394

CAT III (Low)

The ESXi host Secure Shell (SSH) daemon must set a timeout count on idle sessions.

Rule ID

SV-256394r959010_rule

STIG

VMware vSphere 7.0 ESXi Security Technical Implementation Guide

Version

V1R4

CCIs

CCI-000366

Discussion

Setting a timeout ensures that a user login will be terminated as soon as the "ClientAliveCountMax" is reached.

Check Content

From an ESXi shell, run the following command:

# /usr/lib/vmware/openssh/bin/sshd -T|grep clientalivecountmax

Expected result:

clientalivecountmax 3

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

Fix Text

From an ESXi shell, add or correct the following line in "/etc/ssh/sshd_config":

ClientAliveCountMax 3