IBM AIX
TMA-AIX-4.3.2.2
Ensure dhcp client services are not in use
Beschreibung
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.
So wird geprüft
Prüfmethode: Shell-Befehl
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- Erwartete Ausgabe
compliant
So wird behoben
Behebungsmethode: Anleitung oder Infrastruktur-Patch
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
Eigenschaften
- Betriebssysteme
- Beliebig
- Tags
- aixnetwork
- Referenz
- CIS IBM AIX 7 Benchmark v1.2.0 - 4.3.2.2 Ensure dhcp client services are not in use
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