TMAegisBeta
Mais regras para linux

Linux distributions

TMA-RHEL10-3.3.2.2

Ensure net.ipv6.conf.default.forwarding is configured

MédiaNível 1Automatizadalinux

Descrição

The net.ipv6.conf.all.forwarding flag tells the system whether it can forward IPv6 on the default or newly added network interface. Note: If IPv6 has been disabled, or this system is a router, this recommendation is not applicable.

Como é verificado

Método de auditoria: Comando shell

shell
chk() { p=$1; allowed=" $2 "; case $p in net.ipv6.*) [ -d /proc/sys/net/ipv6 ] || return 0;; esac; v=$(sysctl -n "$p" 2>/dev/null) || { echo "$p: not available"; return 1; }; case "$allowed" in *" $v "*) ;; *) echo "$p is $v (running)"; return 1;; esac; sd=$(readlink -e /lib/systemd/systemd-sysctl || readlink -e /usr/lib/systemd/systemd-sysctl); f=$("$sd" --cat-config 2>/dev/null | grep -Po "^\h*${p//./\.}\h*=\h*\K\H+" | tail -n1); [ -n "$f" ] || { echo "$p is not set in any sysctl configuration file"; return 1; }; case "$allowed" in *" $f "*) ;; *) echo "$p is $f in configuration"; return 1;; esac; }; if chk net.ipv6.conf.default.forwarding 0; then echo compliant; fi
Saída esperada
compliant

Como é corrigido

Método de correção: Orientação ou patch de infraestrutura

1. Review all files being used by systemd sysctl and comment out or remove all net.ipv6.conf.default.forwarding lines that are not net.ipv6.conf.default.forwarding=0. Example script: #!/usr/bin/env bash { l_option="net.ipv6.conf.default.forwarding" l_value="0" l_grep="${l_option//./(\\.|\\/)}" a_files=() l_systemdsysctl="$(readlink -e /lib/systemd/systemd-sysctl \ || readlink -e /usr/lib/systemd/systemd-sysctl)" l_ufw_file="$([ -f /etc/default/ufw ] && \ awk -F= '/^\s*IPT_SYSCTL=/ {print $2}' /etc/default/ufw)" [ -f "$(readlink -e "$l_ufw_file")" ] && \ a_files+=("$l_ufw_file"); a_files+=("/etc/sysctl.conf") while IFS= read -r l_fname; do l_file="$(readlink -e "${l_fname//# /}")" [ -n "$l_fi…

Propriedades

Sistemas operacionais
rhel-10
Tags
cis-convertedkernellinuxsysctl
Referência
CIS Red Hat Enterprise Linux 10 Benchmark v1.0.1 - 3.3.2.2

Verificar este host

Execute isto em uma máquina que você tenha permissão para auditar. A varredura é somente leitura.

shell
tmaegis scan --target linux