All remote access methods must be monitored.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-75863	UBTU-16-030450	SV-90543r2_rule		Medium

Description
Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access management difficult at best. Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless. Automated monitoring of remote access sessions allows organizations to detect cyber attacks and also ensure ongoing compliance with remote access policies by auditing connection activities of remote access capabilities, such as Remote Desktop Protocol (RDP), on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).

Description

Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access management difficult at best. Remote access is access to DoD nonpublic information systems by an authorized user (or an information system) communicating through an external, non-organization-controlled network. Remote access methods include, for example, dial-up, broadband, and wireless. Automated monitoring of remote access sessions allows organizations to detect cyber attacks and also ensure ongoing compliance with remote access policies by auditing connection activities of remote access capabilities, such as Remote Desktop Protocol (RDP), on a variety of information system components (e.g., servers, workstations, notebook computers, smartphones, and tablets).

STIG	Date
Canonical Ubuntu 16.04 Security Technical Implementation Guide	2020-05-29

Details

Check Text ( C-75551r2_chk )
Verify that the Ubuntu operating system monitors all remote access methods. Check that remote access methods are being logged by running the following command: # grep -E '(auth.\|authpriv.\|daemon.)' /etc/rsyslog.d/50-default.conf auth,authpriv. /var/log/auth.log daemon.notice /var/log/messages If "auth.", "authpriv." or "daemon.*" are not configured to be logged, this is a finding.

Fix Text (F-82493r2_fix)
Configure the Ubuntu operating system to monitor all remote access methods by adding the following lines to the "/etc/rsyslog.d/50-default.conf" file: auth.,authpriv. /var/log/secure daemon.notice /var/log/messages The "rsyslog" service must be restarted for the changes to take effect. To restart the "rsyslog" service, run the following command: # sudo systemctl restart rsyslog.service