Information
The ESXi host Secure Shell (SSH) daemon must set a timeout interval on idle sessions.
GROUP ID: V-258766
RULE ID: SV-258766r959010
Automatically logging out idle users guards against compromises via hijacked administrative sessions.
Solution
From an ESXi shell, run the following command:
esxcli system ssh server config set -k clientaliveinterval -v 200
or
From a PowerCLI command prompt while connected to the ESXi host, run the following commands:
$esxcli = Get-EsxCli -v2
$arguments = $esxcli.system.ssh.server.config.set.CreateArgs()
$arguments.keyword = 'clientaliveinterval'
$arguments.value = '200'
$esxcli.system.ssh.server.config.set.Invoke($arguments)