Ensure dhcp relay services are not in use

보통레벨 1자동aix

설명

The dhcprd daemon listens for broadcast packets, receives them, and forwards them to the appropriate DHCP or BOOTP server. Unless a system is specifically set up to act as a DHCP relay server, it is recommended that the dhcpd fileset be removed to reduce the potential attack surface. Audit: the dhcprd start line in /etc/rc.tcpip must be commented out and the dhcprd 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=$( { grep -E "^[[:blank:]]*start[[:blank:]]+/usr/(sbin|lib)/dhcprd([[:blank:]]|$)" /etc/rc.tcpip; lssrc -s dhcprd | 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.dhcpd bos.net.tcp.server - OR - - IF - the bos.net.tcp.dhcpd fileset is required as a dependency: Run the following script to stop and disable dhcprd #!/usr/bin/ksh DAEMONS="dhcprd" 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 - 4.3.2.3 Ensure dhcp relay services are not in use

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shell

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