Redis Enterprise DBMS must disable network functions, ports, protocols, and services deemed by the organization to be nonsecure, in accord with the Ports, Protocols, and Services Management (PPSM) guidance.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-251215	SRG-APP-000383-DB-000364	RD6X-00-007900	SV-251215r961470_rule	2024-09-04	2

Description
Use of nonsecure network functions, ports, protocols, and services exposes the system to avoidable threats.

ℹ️ Check
To check this control, investigate the application documentation and understand what services and ports are in use within the application. Inspect the ports running on the server using the following command: sudo ss -tulw If any ports or services that are not approved are present in the output of this command, this is a finding. Redis Enterprise makes use of the following ports: 1. TCP 1968, Internal, Proxy traffic 2. TCP 3333, 3334, 3335, 3336, 3337, 3338, 3339, 36379, 36380, Internal, Cluster traffic 3. TCP 8001, Internal, External, Sentinel Traffic 4. TCP 8002, 8004, Internal, System health monitoring 5. TCP 8443 Internal, External, User Interface 6. TCP 8444, 9080, Internal, Proxy Traffic 7. TCP 9081. Internal, Active-Active 8. TCP 8070, 8071, Internal & External, Metrics Exporter 9. TCP 9443 (Recommended), 8080 (Recommended to be removed), REST API traffic 10. TCP 10000-19999, Internal, External, Active-Active Database traffic 11. TCP 20000-29999, Internal 12. UDP 53, 5353, Internal, External DNS/mDNS traffic

ℹ️ Check

To check this control, investigate the application documentation and understand what services and ports are in use within the application. Inspect the ports running on the server using the following command: sudo ss -tulw If any ports or services that are not approved are present in the output of this command, this is a finding. Redis Enterprise makes use of the following ports: 1. TCP 1968, Internal, Proxy traffic 2. TCP 3333, 3334, 3335, 3336, 3337, 3338, 3339, 36379, 36380, Internal, Cluster traffic 3. TCP 8001, Internal, External, Sentinel Traffic 4. TCP 8002, 8004, Internal, System health monitoring 5. TCP 8443 Internal, External, User Interface 6. TCP 8444, 9080, Internal, Proxy Traffic 7. TCP 9081. Internal, Active-Active 8. TCP 8070, 8071, Internal & External, Metrics Exporter 9. TCP 9443 (Recommended), 8080 (Recommended to be removed), REST API traffic 10. TCP 10000-19999, Internal, External, Active-Active Database traffic 11. TCP 20000-29999, Internal 12. UDP 53, 5353, Internal, External DNS/mDNS traffic

✔️ Fix
Use firewalld commands to remove any unnecessary ports from the appropriate zone. To do this, enter the following commands as root. This command will immediately remove a port from the configuration: $ firewall-cmd --zone=<zone> --remove-port=<port>/<protocol> This command will persistently remove a port from a configuration: $ firewall-cmd --permanent --zone=<zone> --remove-port=<port>/<protocol> Repeat the previous commands for any port that is unauthorized for use or is not used.

✔️ Fix

Use firewalld commands to remove any unnecessary ports from the appropriate zone. To do this, enter the following commands as root. This command will immediately remove a port from the configuration: $ firewall-cmd --zone=<zone> --remove-port=<port>/<protocol> This command will persistently remove a port from a configuration: $ firewall-cmd --permanent --zone=<zone> --remove-port=<port>/<protocol> Repeat the previous commands for any port that is unauthorized for use or is not used.