Ensure that swarm services are bound to a specific host interface

SrednjaNivo 1Ručni pregleddocker

Opis

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.

Kako se proverava

Metod provere: Ručni pregled

Ova preporuka se ne može proveriti automatski. Skeniranje je navodi sa ovim uputstvima kada prosledite --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'

Kako se ispravlja

Metod ispravke: Smernica ili zakrpa infrastrukture

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

Svojstva

Operativni sistemi: Bilo koji
Oznake: dockermanual
Referenca: CIS Docker Benchmark v1.9.0 - 7.2 Ensure that swarm services are bound to a specific host interface