ELB with administrative service: Remote Desktop (TCP:3389) is exposed to a wide network scope

Services and databases store data that may be sensitive, protected by law, subject to regulatory requirements or compliance standards. It is highly recommended that access to data will be restricted to encrypted protocols. This rule detects network settings that may expose data via unencrypted protocol over the public internet or to a too wide local scope.

Risk Level: Medium
Cloud Entity: Elastic Load Balancing (ELB)
CloudGuard Rule ID: D9.AWS.NET.AG2.5.ELB.3389.TCP
Covered by Spectral: No
Category: Networking & Content Delivery


ELB where inboundRules contain [port <= 3389 and portTo >= 3389 and protocol in ('TCP','ALL')] should not have inboundRules contain [port <= 3389 and portTo >= 3389 and protocol in ('TCP','ALL') and scope numberOfHosts() > 256]


It is recommended to remove the rules that allow permissive SSH/Remote/Admin access.

As a further protection, use CloudGuard Dynamic Access Leasing to limit access to SSH/Remote Desktop only from allowed sources and only when needed.
For more information please refer to: https://sc1.checkpoint.com/documents/CloudGuard_Dome9/Documentation/Network-Security/DynAccessLease.html?tocpath=Network%20Security%7C_____3

Elastic Load Balancing (ELB)

Elastic Load Balancing automatically distributes incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, and IP addresses. It can handle the varying load of your application traffic in a single Availability Zone or across multiple Availability Zones. Elastic Load Balancing offers three types of load balancers that all feature the high availability, automatic scaling, and robust security necessary to make your applications fault tolerant.

Compliance Frameworks

  • BP-0318
  • LGPD
  • SMPL-0318