VMware Cloud Foundation Networking (NSX) Technical

Secure Multi-Tenant Networks with VPNs

VMware Cloud Foundation 5.2 introduces an enhancement for multi-tenant environments: the ability to create and manage VPNs directly within NSX Projects. This empowers project administrators with control over their network connectivity, while maintaining the security and isolation that projects offer.

Why VPNs in Projects Matter

In today’s complex networking landscape, organizations often leverage VMware NSX Projects for multi-tenancy by segmenting infrastructure and providing dedicated resources to different teams or tenants. With the addition of VPN capabilities to NSX Projects, VMware Cloud Foundation 5.2 (NSX 4.2) streamlines the process of establishing secure connections between project-specific resources and external networks. Cloud providers, in particular, benefit from this setup by easily exposing VPN services to their customers, enhancing the overall efficiency and security of their platforms. 

Key Features and Benefits

  • Project-Level VPN Creation: Project administrators can now effortlessly configure both IPsec policy-based VPNs and L2 VPNs on their NSX Project (Tier-1 gateways). This eliminates the need for complex routing configurations and simplifies the setup process.
  • Self-service Certificate Management: VCF 5.2 also introduces project-level certificate management, enabling project administrators to securely manage and utilize certificates for their VPN connections without impacting other projects.
  • Enhanced Security and Isolation: VPNs created within projects inherit the security and isolation benefits of the project environment, ensuring that traffic remains contained and protected.
  • Seamless Integration with VCD: The integration of VPN capabilities into projects aligns perfectly with VMware Cloud Director (VCD), simplifying the management of virtual data centers and multi-tenant environments.
  • Greater Visibility: NSX 4.2 ensures that logs related to VPN activity within projects are clearly labeled, making it easier to monitor and troubleshoot connections.
  • VPN Administrator Role: The VPN Administrator role is now extended to include project-level management, enhancing security and delegation by allowing precise control over VPN configurations within specific projects.
  • VPC Consumption Quota: Administrators can now manage and control certificate and VPC consumption through quotas, ensuring efficient resource usage and preventing over-consumption.
  • Provider-Shared CRLs: Cloud providers can share both Service Certificates and Certificate Revocation Lists (CRLs) for tenant consumption, improving security and trust within the multi-tenant environment.

Use Cases

  • Integrate Existing Network into Project: Move existing workloads into NSX Project by extending existing networks into project segments via L2VPN.
  • Hybrid Cloud Connectivity: Projects can leverage VPNs to create secure connections to cloud resources, extending the reach of their networks.
  • Inter-Project Communication:  VPNs can be used to facilitate secure communication and data transfer between different projects within the same organization.

Enhanced Flexibility in NSX Projects and VPCs: Enable/Disable Traffic Isolation Default Rules

With our latest update to VMware Cloud Foundation 5.2, in NSX Projects and VPCs, we are excited to introduce a powerful new feature that enhances the flexibility and control over network traffic isolation. By default, NSX projects and VPCs are provisioned with Distributed Firewall (DFW) rules that enable communication between workloads within the project or VPC, as well as DHCP traffic. All other traffic is restricted by default, ensuring a secure and isolated environment. However, recognizing the diverse needs of our users, we have implemented a switch that allows administrators to disable these isolation rules entirely. When the switch is disabled, it allows for flexible traffic management within projects or VPCs. While no default traffic restrictions will be created at the Project and VPC levels, users have the ability to create their own rules and isolation measures as needed. Additionally, any rules set at higher levels, such as the Default in the Distributed Firewall (DFW), will continue to apply to all workloads.

This new capability not only provides a streamlined approach to managing network policies but also empowers organizations to tailor their network environments according to specific application requirements or compliance needs. Administrators can now choose to globally enable or disable these default isolation rules across all projects and VPCs or selectively re-enable specific rules as needed. Whether it’s for testing environments that require open communication between all endpoints or for specific use cases where unrestricted traffic is beneficial, this feature ensures that NSX users have the flexibility to optimize their network architecture effortlessly.