Ensure tftp server services are not in use

보통레벨 1자동linux

설명

Trivial File Transfer Protocol (TFTP) is a simple protocol for exchanging files between two TCP/IP machines. TFTP servers allow connections from a TFTP Client for sending and receiving files.

점검 방법

감사 방식: 셸 명령

shell

alt0() { command -v rpm >/dev/null 2>&1 || { echo "step1: rpm not installed"; return 1; }; o=$(bash -c 'rpm -q tftp-server' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- 'package tftp-server is not installed' || { echo step1: missing 'package tftp-server is not installed'; return 1; }; }; alt1() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; command -v systemctl >/dev/null 2>&1 || { echo "step1: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-enabled tftp.socket tftp.service 2>/dev/null | grep '"'"'enabled'"'"'' 2>/dev/null); [ -z "$o" ] || { echo "step1: $o" | head -c 300; return 1; }; command -v grep >/dev/null 2>&1 || { echo "step2: grep not installed"; return 1; }; command -v systemctl >/dev/null 2>&1 || { echo "step2: systemctl not installed"; return 1; }; o=$(bash -c 'systemctl is-active tftp.socket tftp.service 2>/dev/null | grep '"'"'^active'"'"'' 2>/dev/null); [ -z "$o" ] || { echo "step2: $o" | head -c 300; return 1; }; }; if alt0 || alt1; then echo compliant; fi

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Run the following commands to stop tftp.socket and tftp.service, and remove the tftp-server package: # systemctl stop tftp.socket tftp.service # dnf remove tftp-server - OR - - IF - the tftp-server package is required as a dependency: Run the following commands to stop and mask tftp.socket and tftp.service: # systemctl stop tftp.socket tftp.service # systemctl mask tftp.socket tftp.service

속성

운영 체제: alinux-3
태그: cis-convertedlinux
참고 자료: CIS Alibaba Cloud Linux 3 Benchmark v2.0.0 - 2.1.17

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