TMA-AIX-4.3.2.3
Ensure dhcp relay services are not in use
Description
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.
Méthode de vérification
Méthode d'audit: Commande 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- Sortie attendue
compliant
Méthode de correction
Méthode de correction: Recommandation ou correctif d'infrastructure
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
Propriétés
- Systèmes d'exploitation
- Tous
- Étiquettes
- aixnetwork
- Référence
- CIS IBM AIX 7 Benchmark v1.2.0 - 4.3.2.3 Ensure dhcp relay services are not in use
Vérifier cet hôte
Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.
tmaegis scan --target aix