Host SSH daemon, if enabled, must disable TCP forwarding

MediaNivel 1Automatizadavmware

Descripción

Disabling TCP forwarding in the SSH daemon is a measure to prevent potential unauthorized tunneling and forwarding activities that could lead to data leaks or unauthorized data access. This measure adds a layer of security to the SSH service when enabled, making the system more resilient against certain types of network attacks. The audit reads /etc/ssh/sshd_config and requires AllowTcpForwarding no. 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)=="allowtcpforwarding" {print tolower($2); exit}' "$f")
case "$v" in '') echo 'AllowTcpForwarding not set' ;; no) echo compliant ;; *) echo "AllowTcpForwarding $v" ;; esac

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

To remediate this recommendation, set AllowTcpForwarding no, restart SSH if authorized, and test that TCP forwarding is blocked. Document any approved exception.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: vmwareesxiservices
Referencia: CIS VMware ESXi 9.0 Benchmark v1.0.0 - 6.5.10 Host SSH daemon, if enabled, must disable TCP forwarding

Verificar este host

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

shell

tmaegis scan --target vmware