Ensure a single firewall utility is in use

高レベル 1自動freebsd

説明

FreeBSD ships with multiple firewall utilities, providing uses with options to best suit their environment. This section provides guidance to ensure that only one firewall utility is implemented. The use of more than one firewall utility may produce unexpected results. Audit: exactly one of firewall_enable (ipfw), ipfilter_enable or pf_enable must be YES.

チェック方法

監査方法: シェルコマンド

shell

command -v sysrc >/dev/null 2>&1 || exit 1; n=0; for k in firewall_enable ipfilter_enable pf_enable; do v=$(sysrc -q -n $k 2>/dev/null); case "$v" in [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) n=$((n+1));; esac; done; [ "$n" -eq 1 ] && echo compliant || echo "$n firewall utilities enabled"

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

Run the following script to ensure that a single firewall utility is in use on the system. If more than one firewall utility was found to be running then all other services except the desired one should be stopped and disabled. For ipfilter run: # service ipfilter stop # service ipfilter disable For ipfw run: # service firewall stop # service firewall disable For pf run: # service pf stop # service pf disable

プロパティ

オペレーティングシステム: すべて
タグ: freebsdnetwork
参照: CIS FreeBSD 14 Benchmark v1.0.1 - 3.4.1.2 Ensure a single firewall utility is in use

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 freebsd