4.2.1.6 Ensure remote rsyslog messages are only accepted on designated log hosts.

Warning! Audit Deprecated

This audit has been deprecated and will be removed in a future update.

Information

By default, rsyslog does not listen for log messages coming in from remote systems. The ModLoad tells rsyslog to load the imtcp.so module so it can listen over a network via TCP. The InputTCPServerRun option instructs rsyslogd to listen on the specified TCP port.

Note: The $ModLoad imtcp line can have the .so extension added to the end of the module, or use the full path to the module.

The guidance in the section ensures that remote log hosts are configured to only accept rsyslog data from hosts within the specified domain and that those systems that are not designed to be log hosts do not accept any remote rsyslog messages. This provides protection from spoofed log data and ensures that system administrators are reviewing reasonably complete syslog data in a central location.

NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.

NOTE: journald or rsyslog was not found to be active. Review benchmark guidance to ensure local compliance.

Solution

For hosts that are designated as log hosts, edit the /etc/rsyslog.conf file and un-comment or add the following lines:

$ModLoad imtcp

$InputTCPServerRun 514

For hosts that are not designated as log hosts, edit the /etc/rsyslog.conf file and comment or remove the following lines:

# $ModLoad imtcp

# $InputTCPServerRun 514

Run the following command to reload the rsyslogd configuration:

# systemctl restart rsyslog

Item Details

Audit Name: CIS Amazon Linux 2 STIG v2.0.0 STIG

Category: CONFIGURATION MANAGEMENT

Plugin: Unix

Control ID: 919dc80ac3dd3699bdde94fb719b6d9fa740d1d9d39d12886015f4c2a71a43b9

Detections

Analytics

4.2.1.6 Ensure remote rsyslog messages are only accepted on designated log hosts.

Warning! Audit Deprecated

Information

Solution

See Also

Item Details