Disable Proxy ARP on all Layer 3 Interfaces

中レベル 1自動cisco-nxos

説明

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).

チェック方法

監査方法: 設定パターン

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

修正方法

修正方法: ガイダンスまたは IaC パッチ

! 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

プロパティ

オペレーティングシステム: すべて
タグ: cisco-nxosnetworkhardening
参照: CIS Cisco NX-OS Benchmark v1.2.0 - 3.2.3 Disable Proxy ARP on all Layer 3 Interfaces

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target cisco-nxos