Host must block network traffic by default

中レベル 1自動vmware

説明

By default, the host is configured to block all incoming and outgoing network traffic, except for the traffic pertaining to services enabled in the host security profile. This configuration is pivotal in reducing the attack surface and averting unauthorized access to the host. The audit runs esxcli network firewall get and requires "Enabled: true" and "Default Action: DROP"; review enabled rulesets as well. Runs in the ESXi Shell (busybox sh) as root.

チェック方法

監査方法: シェルコマンド

shell

out=$(esxcli network firewall get 2>/dev/null) || exit 1
a=$(printf '%s\n' "$out" | sed -n 's/^ *Default Action: *//p' | head -n 1)
e=$(printf '%s\n' "$out" | sed -n 's/^ *Enabled: *//p' | head -n 1)
[ "$a" = DROP ] && [ "$e" = true ] && echo compliant || echo "firewall enabled=$e default action=$a"

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

1. Enable the ESXi firewall if disabled and disable unnecessary rulesets. 2. Use: esxcli network firewall set --enabled true 3. Configure only the required rulesets for documented services.

プロパティ

オペレーティングシステム: すべて
タグ: vmwareesxinetwork
参照: CIS VMware ESXi 9.0 Benchmark v1.0.0 - 5.2 Host must block network traffic by default

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 vmware