TMA-AIX-4.3.2.2

Ensure dhcp client services are not in use

보통레벨 1자동aix

설명

The dhcpcd and dhcpcd6 daemons receive address and configuration information from the DHCP server for IPv4 and IPv6 respectively. Unless a system is specifically expected to receive IP address and configuration via DHCP, it is recommended that the dhcp client fileset be removed to reduce the potential attack surface. Audit: the dhcpcd start line in /etc/rc.tcpip must be commented out and the dhcpcd subsystem must not be active.

점검 방법

감사 방식: 셸 명령

shell

command -v lssrc >/dev/null 2>&1 || exit 1; [ -r /etc/rc.tcpip ] || exit 1; out=$( { grep -E "^[[:blank:]]*start[[:blank:]]+/usr/(sbin|lib)/dhcpcd([[:blank:]]|$)" /etc/rc.tcpip; lssrc -s dhcpcd | awk 'NR>1 && $NF=="active"' ; } 2>/dev/null ); [ -z "$out" ] && echo compliant || printf '%s\n' "$out" | head -n 20

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Run the following command to remove the software: # /usr/sbin/installp -u bos.net.tcp.dhcp bos.net.tcp.client - OR - - IF - the bos.net.tcp.dhcp fileset is required as a dependency: Run the following script to stop and disable dhcpcd and dhcpcd6 #!/usr/bin/ksh DAEMONS="dhcpcd dhcpcd6" for l_daemon in $DAEMONS; do /usr/sbin/chrctcp -d $l_daemon /usr/bin/stopsrc -s $l_daemon done

속성

운영 체제: 모두
태그: aixnetwork
참고 자료: CIS IBM AIX 7 Benchmark v1.2.0 - 4.3.2.2 Ensure dhcp client services are not in use

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감사 권한이 있는 시스템에서 실행하세요. 스캔은 읽기 전용입니다.

shell

tmaegis scan --target aix