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

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-206513	SRG-APP-000516	SRG-APP-000516-AU-000340	SV-206513r961863_rule	2024-12-04	3

Description
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.

Description

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.

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