Tri-Lab Operating System Stack (TOSS) 4 STIG Version Comparison
Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide
Comparison
There are 2 differences between versions v1 r1 (June 10, 2022) (the "left" version) and v1 r3 (Jan. 24, 2024) (the "right" version).
Check TOSS-04-030900 was changed between these two versions. Green, underlined text was added, red, struck-out text was removed.
The regular view of the left check and right check may be easier to read.
Text Differences
Title
The TOSS audit records must be off-loaded offloaded onto a different system or storage media from the system being audited.
Check Content
Verify the audit system off-loads offloads audit records onto a different system or media from the system being audited with the following command: $ sudo grep @@ /etc/rsyslog.conf /etc/rsyslog.d/*.conf /etc/rsyslog.conf:*.* @@[remoteloggingserver]:[port] If a remote server is not configured, or the line is commented out, ask the System Administrator to indicate how the audit logs are off-loaded offloaded to a different system or media. If there is no evidence that the audit logs are being off-loaded offloaded to another system or media, this is a finding.
Discussion
Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Offloading is a common process in information systems with limited audit storage capacity. TOSS installation media provides "rsyslogd." "rsyslogd" is a system utility providing support for message logging. Support for both internet and UNIX domain sockets enables this utility to support both local and remote logging. Couple this utility with "gnutls" (which is a secure communications library implementing the SSL, TLS, and DTLS protocols), and now there is now a method to securely encrypt and off-load offload auditing. Rsyslog provides three ways to forward message: the traditional UDP transport, which is extremely lossy but standard; the plain TCP based transport, which loses messages only during certain situations but is widely available; and the RELP transport, which does not lose messages but is currently available only as part of the rsyslogd 3.15.0 and above. Examples of each configuration: UDP *.* @remotesystemname TCP *.* @@remotesystemname RELP *.* :omrelp:remotesystemname:2514 Note that a port number was given as there is no standard port for RELP. Satisfies: SRG-OS-000342-GPOS-00133, SRG-OS-000479-GPOS-00224
Fix
There are multiple Multiple software applications other than rsyslog may be used by the system to accomplish this requirement. This Fix assumes rsyslog is used for offloading logs from the system. Configure the operating system to off-load offload audit records onto a different system or media from the system being audited by specifying the remote logging server in "/etc/rsyslog.conf" or "/etc/rsyslog.d/[customfile].conf" with the name or IP address of the log aggregation server. *.* @@[remoteloggingserver]:[port]