Ensure dns server services are not in use

中レベル 1自動aix

説明

The named daemon is the server for the DNS protocol and controls domain name resolution for its clients. Unless a system is specifically designated to act as a DNS server, it is recommended that the named fileset be removed to reduce the potential attack surface. Audit: the named start line in /etc/rc.tcpip must be commented out and the named subsystem must not be active.

チェック方法

監査方法: シェルコマンド

shell

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

期待される出力: compliant

修正方法

修正方法: ガイダンスまたは IaC パッチ

Run the following command to remove the software: # /usr/sbin/installp -u bos.net.tcp.bind bos.net.tcp.server bind.rte - OR - - IF - the bos.net.tcp.bind or bind.rte filesets are required as a dependency: Run the following script to stop and disable named #!/usr/bin/ksh DAEMONS="named" for l_daemon in $DAEMONS; do /usr/sbin/chrctcp -d $l_daemon /usr/bin/stopsrc -s $l_daemon done

プロパティ

オペレーティングシステム: すべて
タグ: aixservices
参照: CIS IBM AIX 7 Benchmark v1.2.0 - 4.3.2.8 Ensure dns server services are not in use

このホストをチェック

監査が許可されているマシンで実行してください。スキャンは読み取り専用です。

shell

tmaegis scan --target aix