Ensure that swarm services are bound to a specific host interface

MediaNivel 1Revisión manualdocker

Descripción

By default, Docker swarm services will listen on all interfaces on the host. This may not be necessary for the operation of the swarm where the host has multiple network interfaces. When a swarm is initialized the default value for the --listen-addr flag is 0.0.0.0:2377 which means that swarm services will listen on all interfaces on the host. Reported as a manual review item: the audit needs a site-specific judgement.

Cómo se verifica

Método de auditoría: Revisión manual

Esta recomendación no se puede verificar automáticamente. Un escaneo la lista con estas instrucciones cuando se pasa --include-manual.

You should check the network listener on port 2377 (the default for docker swarm) and 7946 (container network discovery), and confirm that it is only listening on specific interfaces. For example, in this could be done using the following command: ss -lp | grep -iE ':2377|:7946'

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Resolving this issues requires re-initialization of the swarm, specifying a specific interface for the --listen-addr parameter.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: dockermanual
Referencia: CIS Docker Benchmark v1.9.0 - 7.2 Ensure that swarm services are bound to a specific host interface