Ensure DHCP Server is not enabled

中级别 1自动化ros

说明

The Dynamic Host Configuration Protocol (DHCP) is a service that allows machines to be dynamically assigned IP addresses. The audit requires the DHCP server unit(s) isc-dhcp-server, isc-dhcp-server6 not to be enabled or active (systemctl). Host-level control from the CIS ROS Melodic benchmark (Ubuntu 18.04 robot hosts); run as root.

检查方式

审计方法: Shell 命令

shell

command -v systemctl >/dev/null 2>&1 || exit 1
bad=0
for u in isc-dhcp-server isc-dhcp-server6; do
  s=$(systemctl is-enabled "$u" 2>/dev/null)
  case "$s" in enabled|enabled-runtime|alias|indirect) echo "$u is $s"; bad=1 ;; esac
  systemctl is-active --quiet "$u" 2>/dev/null && { echo "$u is active"; bad=1; }
done
[ "$bad" -eq 0 ] && echo compliant

预期输出: compliant

修复方式

修复方法: 操作指南或基础设施补丁

Run one of the following commands to disable dhcpd: # systemctl --now disable isc-dhcp-server # systemctl --now disable isc-dhcp-server6

属性

操作系统: 任意
标签: rosros1melodicservices
参考: CIS ROS Melodic Benchmark v1.0.0 - 2.2.5 Ensure DHCP Server is not enabled

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target ros