Host SSH daemon, if enabled, must set a timeout interval on idle sessions

MediaNivel 1Automatizadavmware

Descripción

Implementing a timeout interval on idle SSH sessions ensures that any inactive session gets disconnected after a certain period, improving the security posture. The total timeout duration is calculated by multiplying the timeout count by the idle timeout interval. The audit reads /etc/ssh/sshd_config and requires ClientAliveInterval to be set to a non-zero number of seconds; confirm it matches the approved value. Runs in the ESXi Shell (busybox sh) as root.

Cómo se verifica

Método de auditoría: Comando de shell

shell

f=/etc/ssh/sshd_config; [ -r "$f" ] || exit 1
v=$(awk 'tolower($1)=="clientaliveinterval" {print $2; exit}' "$f")
case "$v" in ''|*[!0-9]*) echo 'ClientAliveInterval ${v:-not set}'; exit 1 ;; esac
[ "$v" -gt 0 ] && echo compliant || echo 'ClientAliveInterval is 0'

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

To remediate this recommendation, set ClientAliveInterval to the approved number of seconds. Restart SSH if enabled and validate timeout behavior together with ClientAliveCountMax.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: vmwareesxiservices
Referencia: CIS VMware ESXi 8.0 Benchmark v1.4.0 - 6.5.6 Host SSH daemon, if enabled, must set a timeout interval on idle sessions

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target vmware