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Check: SRG-APP-000516-AU-000340

Central Log Server SRG: SRG-APP-000516-AU-000340 (in versions v2 r2 through v1 r2)

Title

The Central Log Server that aggregates log records from hosts and devices must be configured to use TCP for transmission. (Cat II impact)

Discussion

If the default UDP protocol is used for communication between the hosts and devices to the Central Log Server, then log records that do not reach the log server are not detected as a data loss. The use of TCP to transport log records to the log servers improves delivery reliability, adds data integrity, and gives the option to encrypt the traffic if the log server communication is not protected using a management network (preferred) or VPN based on mission requirements.

Check Content

Examine the configuration. Verify the Central Log Server is configured to use TCP. If the Central Log Server is not configured to use TCP, this is a finding.

Fix Text

Configure the Central Log Server that aggregates log records from hosts and devices to use TCP for transmission.

Additional Identifiers

Rule ID: SV-206513r401224_rule

Vulnerability ID: V-206513

Group Title: SRG-APP-000516

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CCIs

CCIs tied to check.

Number	Definition
CCI-000366	The organization implements the security configuration settings.

Controls

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

Number	Title
CM-6	Configuration Settings