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VMware ESXi

TMA-ESXI9-4.9

Host must transmit audit records to a remote log collector

MediumLevel 1Automatedvmware

Description

This control enables the forwarding of audit records from the ESXi host to a designated log collector, aiding in real-time monitoring and analysis. The parameter governing this behavior is Syslog.global.auditRecord.remoteEnable with a recommended setting of TRUE. The audit requires Syslog.global.logHost to be set and Syslog.global.auditRecord.remoteEnable to be true (1). Runs in the ESXi Shell (busybox sh) as root.

How it is checked

Audit method: Shell command

shell
out=$(esxcli system settings advanced list -o /Syslog/global/logHost 2>/dev/null) || exit 1
v=$(printf '%s\n' "$out" | sed -n 's/^ *String Value: *//p' | head -n 1)
[ -n "$v" ] || { echo 'Syslog.global.logHost is empty'; exit 1; }
out2=$(esxcli system settings advanced list -o /Syslog/global/auditRecord/remoteEnable 2>/dev/null) || exit 1
v=$(printf '%s\n' "$out2" | awk '$1=="Int" && $2=="Value:" {print $3; exit}')
case "$v" in ''|*[!0-9-]*) echo '/Syslog/global/auditRecord/remoteEnable: no integer value'; exit 1 ;; esac
if [ "$v" -eq 1 ]; then echo compliant; else echo "/Syslog/global/auditRecord/remoteEnable = $v (expected true/1)"; fi
Expected output
compliant

How it is fixed

Fix method: Guidance or infrastructure patch

To configure remote logging properly, perform the following from the vSphere web client: 1. Select the host 2. Click Configure then expand System then select Advanced System Settings. 3. Select Edit then enter Syslog.global.logHost in the filter. 4. Set the Syslog.global.logHost to the hostname or IP address of the central log server. 5. Click OK. Alternately, run the following PowerCLI command: # Set Syslog.global.logHost for each host Get-VMHost | Foreach { Set-AdvancedSetting -VMHost $_ -Name Syslog.global.logHost -Value "<NewLocation>" } Note: When setting a remote log host, it is also recommended to set the "Syslog.global.logDirUnique" to true.

Properties

Operating systems
Any
Tags
vmwareesxilogging
Reference
CIS VMware ESXi 9.0 Benchmark v1.0.0 - 4.9 Host must transmit audit records to a remote log collector

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell
tmaegis scan --target vmware