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The SSH daemon must set a timeout interval on idle sessions.


Overview

Finding ID Version Rule ID IA Controls Severity
V-63223 ESXI-06-000027 SV-77713r1_rule Low
Description
Causing idle users to be automatically logged out guards against compromises one system leading trivially to compromises on another.
STIG Date
VMware vSphere ESXi 6.0 Security Technical Implementation Guide 2019-01-04

Details

Check Text ( C-63957r1_chk )
To verify the ClientAliveInterval setting, run the following command:

# grep -i "^ClientAliveInterval" /etc/ssh/sshd_config

If there is no output or the output is not exactly "ClientAliveInterval 200", this is a finding.
Fix Text (F-69141r1_fix)
To set the ClientAliveInterval setting, add or correct the following line in "/etc/ssh/sshd_config":

ClientAliveInterval 200