Title

IBM z/OS SMF recording options for the SSH daemon must be configured to write SMF records for all eligible events. (Cat II impact)

Discussion

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). Satisfies: SRG-OS-000032-GPOS-00013, SRG-OS-000392-GPOS-00172

Check Content

Locate the SSH daemon configuration file which may be found in "/etc/ssh/" directory. Alternately: From UNIX System Services ISPF Shell, navigate to ribbon select tools. Select option 1 - Work with Processes. If SSH Daemon is not active, this is not a finding. Examine SSH daemon configuration file. If ServerSMF is not coded with ServerSMF TYPE119_U83 or is commented out, this is a finding.

Fix Text

Configure the SERVERSMF statement in the SSH Daemon configuration file to TYPE119_U83.

Additional Identifiers

Rule ID: SV-223586r853558_rule

Vulnerability ID: V-223586

Group Title: SRG-OS-000032-GPOS-00013

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.