Disable Proxy ARP on all Layer 3 Interfaces

MediaNivel 1Automatizadacisco-nxos

Descripción

Proxy ARP is the technique in which one host, usually a router, answers ARP requests intended for another machine on a different network segment (vlan or subnet). By faking its identity, the router accepts responsibility for routing packets to the real destination. Audited against the output of 'show running-config' (run 'terminal length 0' first; do not use 'show running-config all', which adds default values).

Cómo se verifica

Método de auditoría: Patrón de configuración

Patrón: (?m)^[ \t]*ip (?:local-)?proxy-arp\b

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

! Proxy ARP is disabled on all interfaces by default, and that configuration does not appear in the running or saved configuration. Proxy ARP only appears in the configuration if it is enabled (which is not desired in most cases). To disable this on an interface if it is enabled: no ip proxy-arp for instance: int vlan 9 no ip proxy-arp

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: cisco-nxosnetworkhardening
Referencia: CIS Cisco NX-OS Benchmark v1.2.0 - 3.2.3 Disable Proxy ARP on all Layer 3 Interfaces

Verificar este host

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

shell

tmaegis scan --target cisco-nxos